SCIENTIFIC ABSTRACT SELIVANOVA, N.M. - SELIVANOVA, T.A.

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• Publication Date: December 31, 1967
• Content Type: SCIENTIFIC ABSTRACT

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5(1-+'), 5(2)
LUTHORS: Sel ivanova, N. M., Zubova, G. A. SOV/ 1 ", 3 - '533- 5 - 5/"
TITLE: Phycical and Chemical Properties of Strontium Selenate
(Fiziko-khimicheskiye svoystva selenata strontsiya)
PERIODICAL: Izve--tiya vysshi"kh uchebnykh zavedeniy. Khimiya i khimic',-es-
kaya tekhnologiyq., 1958, Nr 3, pp 27 - 33 (USSR)
ABS'I'MICT: The industrial use of the selenates besides other
selen-Jur, compounds is steadily increasine (Refs 1-6).
The knowledge of the properties mentioned in the
title, which are little known, is becomin7 urrent
0
more and more (Refs 7-12). The strontium selenate
belon.-s to the least known salts of the selenic acid,
and there are only a few data available on its
solubility (Ref 13). Its behavior on heating (Ref 14)
is hardly kno-an. The clarification of these questions
is the purpose of the present paper. The determination results
of the solubility of strontium selenate in the
thermostat at 25.;t 0.10 by the polarographic and
Card 113 gravimetric method are Seen in t,~ble 1. The solubility

Physical and Chemical Propertie3 of Strontium Selenante SOV/153-58-3-5/3o
product Lp (as average number of both methods) was
3-75-10- 4. The solubility of the strontium selenate
(determined by these two methods) between 0 and 1000
in the thermostat is given in table 2 (polythermal
lines of the solubility). By heating the strontium
selenate ( in contrast with SrSO ) does not undergo
an polymorphous enantiotropic trAlsformation. On
heatin6 it is decomposed under selenite formation
L
and oxygen separation. Thus, the chemism of the
selenate decomposition differs from th-rt of the
strontium sulfate. Professor IT.F.K;~Ipustinskiy,
CorresDonding Academy of Sciences, USSR,
has critically reViMd this paper. There are 4
figures, 4 tables, and '1 ref~,rences, 9 of whi~ch are
Soviet.
Card 2/3

Physical and Chemical Properties of Strontium Selenate SOV/1"13-58-3-5/30
ASSOCIATION: Mookovskiy khimilco-tekhnologicheskiy institut ineni
D.I.Mendeleyeva (Moscow Institute of Chemical Tech-
nolo,-y imeni D.I. Mendeleyev) Kafedra obshchey i
neorganiclieskoy khimii (Chair of General and Inor6anic
Chemistry)
SUBMITTED: October 2, 1957
Card 3i3

AUTHORS,, Selivanova, N. b,. , Shneyder, V. A. SOV/-1 56-5 8-4-13/49
TITLE: On Some PhYsico-Chemfcal Properties of Calcium Selenate
(0 riekotlc~rykh fiziko-khimicheskikh svoystvakh selenata.
kalOtsiya)
PERIODICAL: Nauchnyye doklady vysshPy shkoly. Khim-Lya i kh-imicheskaya
tekhnologiya, 1958, Nr 4, pp 664-6066 (USSR)
ABSTRACT: The solubility of CaSeO 4* 2H20 in water within the temperature
range of from (-2.60) to (+101.80) was investigated, and the
behavior of th-is sait on heating was determined. The chemical
analyses and -the microscopic and =adioscopic investigations
have shown that in the temperature range to be investigated
only 'he compound CaSeO 4' 2H20 is present. The heating and
cooling curve of calcium selenate for temperatures of from
500 to 10000C were plotted. The heating curve of calcium -
selenate, is up to 6000 similar to the heating curve of gypsum.
At 1400C the weight lise amcunts to 13,46%, at 2000C to 16-4c~/--
Or. -the heating curve an Pndo-thermal effect occurs at 6980C,
Card 1/2 ,,ihich indicates -.he decomposit-ion of CaSeO 4* The decomposition

SOV/156-58-4-13/49
On Some Physico-Chemical Properties of Calcium Selenate
leads te the formation of selenite (CaSeO 3) and is finished at
6000C. The radiograms Gf the decomposition salts taken prove
the presence of calcium selerlte. The melting point of calcium
selenite is at 9200C. The comparison of the melting temperature
w -~he decomposition temperature of the selenates and sulfates
of calcium shows that calcium selenate is thermally less stable
than calcium sulfate. There are 3 figuresq 1 table, and
8 references, 6 of which are Soviet.
ASSOCIATION: Kafedra obshchey i neorganicheekoy khimii Moskovskogo khimiko-
~-ekhnologicheskogo instituta im.. D. I. Mendeleyeva, (Chair of
General and Inorganic Chemistry at the Moscow Chemo-
Techn-clogical Institute imeni D. 1. Mendeleyev)
SUBMITTED: May 9, 1958
Carl 2/~~

"T1,1011 -6
1. f;: Selivanova, N.M., Shneyder, V.A. SOV/63-3 -~7/43
ITLE: The Thermodynamic Properties of Selenate (Ca5eO8'1..2!i2O)
(0 termodinamicheskikh svoystvakh selenato-[,ipszL) (Cl'se 211,,01
11EI-110DICAL: r-himichf:skaYa nauka i promyshlenrost', 1~'5', Vol III, Nr 6,
PP 834-635 (UFIJR)
A13STRACT: The formation heat oF selenate plaster has been determined as
0 0
,.2'3 kcal/mole, the change of the free energy as -335-18-
kcal/mole, the absolute entropy as 306.08 entropic units,
There are 3 references, 2 of which are Soviet and 1 American.
AS-OCIATION: 1:oskcvskiy khii.,iiko-tekhnologicheskiy institut imeni D.I. 11en-
deleyeva 0.1oscow Chemical-Technolo-ical Institute imeni D.I.
..:ondeleyev)
l'! lc5p
SUBMITTED: 71
C--rd 1/1

78-3-6-4/30
AUTHORS: Selivanov--, N. ".,-Shneyder, V. A., Zubova, G. A.
TITLE: On the Thermal DecomDosition of the Selenates of Strontium,
Barium and Lead (0 termicheskom razlo2henii selenatov
strontsiya, bariya i svintsa)
PERIODICAL: Zhurnal NeorGanicheskoy Xhimii, 1958, Vol. 3, Ur 6,
pp. 1295 - 1303 (USSR)
ABSTRACT: The thermojrams and the cooling curves of the selenates of
strontium, barium and lead were investig-ated in order to
explain the effects occurring in these c--irves.The therm-o-
graphic analyses of strontium and barium selenate were per-
formed within temperature ran.-es of from 100-13000C. On this
occasion three effects tak-e place: For strontium selenate:
at 5250C(exother.-iic), at 8350C(endothermic), and at 1150C
(endothermic).For barium selenate: at 630OC(exotilermic), at
9000C(endother-mic), and at 1255OC(endothernic). The cooling
curves of strontium and barium selenate do not ac-,ree with the
Card 1/2 heating curves of the tv?o compounds, i. e. both processes are

78-3-6-4/3o
On the Thermal Decomposition of the Selenates of Strontium, Barium and Lead
not reversible. It can be seen from the thermograms that also
selenium is oxidized by Se4+ in Se6+. It was shown th~_t the
selenates of strontium, barium and lead wfien heated, pass into
selenite under the release of oxygen. The chemical analyses
of the final products in the thermal analyses were confirmed
by x-ray analysis. The thermogra-phic analysis of lead selenate
showed that at 6800C and 9300C thermal effects take place and
that beginning with 9300C this compound melts. At 10000C the
lead selenite formed at 7000C passes into lead oxide. It was
found that strontium, barium and lead selenate are thermally
more unstable than the correspondinj sulfates. There are 7
figures, 6 tables and 33 references, 9 of which are Soviet.
SUBMITTED: May 6, 1957
AVAILABLE: Library of Con,,,rress
Card 2/2 1. Strontium selenates--Thermal analysis 2. Lead selenates--Thermal
analysis 3. Barium selenates--Thermal analysis

Seliv.~nova, N.L., sov/76-32-6-14/46
TITLE: Some Thermodynamic Properties of Thallium Selenate
(0 nekotorykh termodinamicheskikh 3voystvakh selenata
talliya)
P4;al0DIUAL: Zhurnal fizicheskoy khimii, 1958, Vol~ 32, Nr b.
PI) 1-277-1279 (USSR)
ABJTAACT:
Card 112
The heat of solution, and the difference in the free energy
in the formation of this salt f'rom aqueous ions under
standard conditions was computed. In this connection, data
from publications concerning the solubility of thallium,
selenate in water at temperatures from 00 to 1000Cwere used.
The activation coefficient of sixturated solutions of thallium
selenz,Ae y was obtained by interpolation of the values for
of the tjpe Die2so4 from the monograph by Kharned and
Oren (Ref Y), The interpolation was made graphically. The
0
results for the activity at from 100 to 400 and the heat of
solution was given at intervals of 5 or 10 0 in a table. They
agree Yrith those proposed by Latimer (Ref 10) for such ions.
The difference in the free energy and the heat's of formation

Soma Thermodynamic Properties of Thallium Selenate SOV/'(6-32-6-14/46
of crystalline T1zSeO4are also given, Finally thanks
zLre expressed to Professor A~ F. Kaputsinskiy for a
cri tic-1 revie,,r of the paper. There are I table and
13 references, 3 of which are Soviet.
j U ~-' L. *11 1i'r'li-iiiiiiko-teklinoio~ficheskiy institut Im. D.L. Mendeloyeva
,,ChemicL,l and Technological Institute iraeni
Mo3kva (1itoscow
D, I., Mendeleyev)
SUBMITUD: January 21., lV5'i
1. Thalliwn selenates-Thermodynwrde properties 2. Thallium
selenates--Heat of format-Lon 3. Thallium selenates--Heat of
solution 4. Matheffatics
Card- 2/2

5(2)
AU' THORS: _~,~~~~apustinskiy, A. F. , SOV/62-59-2-21
Zubova, G. A.
TITLE: Thermochemical Properties of Difficultly ':Soluble Selenates
and Entropy of the Selenate Ion in Aqueous Solution
(Termokhimicheskiye svoystva trudnorastvor--;z:ykh selenat-ov i
entropiya selenat-iona v vodnom rastvore)
PERIODICAL: Izvestiya Akademii nauk SSSR. Otdeleniye khir"i-cheskikh nauk,
1959, Nr 2, pp 187-194 (USSR)
.ABSTRACT: In the present paper the authors determined -the react-_on heat
in the nrecizitation of lead and barium selenates -from aciieous
-, content.
solutions by means of selenic acid with < H2 SeC
3
From the data,obtained the formation heat of -'DbSeO -nd 3;-zSeO
4 4
from elements, their absolute entropies and the entropy o-f
the aqueous selenate ion under standard conditions were cal-
culated. For PbSeO
the heat of solution was comzuzed
4
according to the solubility data of this salt in watei- as
different temperatures. For this purpose the sclifbility ol,
in water was investigated in the tuempe-_a-ture range of
PbSeO
Card 1/3 4

Thermochemical Properties of Difficultly Soluble So V162 -5 cl----9/4 C)
Selenates and Entropy of the Selenate Ion in Aqueous
Solution
0.
from 0 to 100 From the measurements carried out
reaction Ba solid + Se solid + 20 2= BaSeO 4
16 R298 = -279.2 large calorie/mole andAF 298 24 c.. 1 1. arE- e
calorie./mole,
for the reaction Pb + Se + 20 FbSeO,
30lid solid 2
4
= -148.7 large calorie/mole and 4F 120.5 large
6 H
298
298 calorie/moie
were obtained. According to thermodynamic data for H 2 SeO 41
SrSeO 41 BaSeO 4' PbSeO4and Tl2 Seo4the mean value of entropy
of the aqueous SeO 2- ion is
4
S = 5.5 t 0-3 entropy units.
The authors express their gratitude to the student Ye. I.
Finkeltshteyn for his taking part in the experimental part
of the work. There are 1 figure, 6 tables, and 106 refereacps,
8 of which are Soviet.
Card 2/3

Thermochemical Properties of Difficultly Soluble SOV/62-59-2-2/4C
Selenates and Entropy of the Selenate Ion in Aoueous
Solution
ASSOCIATION: Kh-imiko-tekhnologicheskiy institut im. D. I. Mendeleyeva
(Institute for Chemical Technology imeni D. I. Mendeleyev)
SUBMITTEDt July 5, 1957
Card 3/3

SOV/153-2-4-1/32
'A-jTr'()LIS Selivanova, I'l. Shneyder, V. A.
T T TL E Physico-che.,i,ical Properties of Selenates. V. Formation Heat of
Calcium Selenate From Elements
PERIODICAL: Iziestiya vysshikh uchebnykh zavedeniy. Khimiya i khimicheskaya
tekhnologiya, 1959, Vol 2, Nr 4, PP 475 - 479 (USSR)
A3STH.kCT: The salt mentioned in the subtitle is very close to calcium
sulfate on account of its properties. Although the heat effects
of many reactions with the latter. participaL 14110, were described
(Refs 1-5), investigations with regard to calcium selenate are
missing. The paper under review alms a'. deterM4 n4ng the forma-
tion heats of the crystalline salts CaSeO 4* 2H20 and CaSeO 4*
Table 1 shows the determination results of the heat of the inter-
acting reaction of the forimer salt with an aqueous silver nitrate
solution. An average value of 9.26+0.240 kcal/mo'L is assumed
by the authors. The Drecipitate of silver selenate formed in
the calorim~eter was chemically analyzed. The results are in Der-
fect agreement with data on a salt. synthesized earlier. The same
Card 1/.' is true of the interplanar spacings computed on account of the

PhYsico-che~mical Properties of Selenates. V. Formation SOV/153-22-4-'/52
-Heat o-` Calc-L-j-- Selena'a From EieLen--s
Debye-Sherrt,r radiograph (Table 21). The formation heat of
crystalline calcium sulfate (Ref 14) is shown in comparison, bind
the difference between the formation heats of the latter and
the selenate (=70.29 kca'j/mol) :is detormined. Table I shows the
hPats of the "wi under di:icuosion at 2150,
A. A~ 1,,Izayr,~r ~etenninod the refi-actiLvl) The hydrati(,n
ht~,O i-A, caseo4(01 hydrati,)d --6.02-0.10 kcai/mol an compared
the iiydration heat of .6,.c)90 ko;A/mol. cf soluble anhydr-ite up
'.(j CaSO 4* 2H2G (Ref 18). The combination of -,,hc- fermi~r value with
the evaporation heat of water (1,0.1:11 Ref ii) gives the
dissociation heat of selenalr,-Dlaster, -J,e- 0',.04 k-al. The
vala.: of the heals effect of ar, anallcgt~L:s proce3s with sulfates
rdetermined by mears of P differential- ~.hermal analysis varies
between 27.24 and 20.2-4 kcal/ /Mol (Ref 18~. The autho.-.s comr)-ate
.1
the r*ormafion heat of crystalline CaSeO 2H-0 from elements usin.or
4* 1
the value of the hydration heat of CaSo-O (-6.02 kcal/mcl' as well.
4 j
Courd value of crystalline CaSeO
from elements,
4
C,rl- V3 :and asf~uf.,ijnl- that the formation heat of water is -68.32~ kcal/mo-"

P'-Ysico-chemical ProD~_rti~s of Selenates. V. ForLation SOV/15~--2-L-1/32
Heat of Calcium Selenate From Ele-..ents
Ref 14): AH 0 270.1!i0.40 kcal/ /mol. The dif~"erence be-
~
1 298.16
tween the formation heazs of CaSO 4 and GaSeO 4 is 7().'6 kcal/m-01.
The energy of th,! lattice (U) of' th~_, low-4~ernperaturp modification
U -
of CaSeSO could be coi~_q)uted according to ~he knicwn equation on
4
account of the resuits obtain-zi. Thas U of the CaSsOl, modification
mentioned last is -609.7 kcal/mol as determined by thq authors.
Similarly, the value for soluble anhyirite is
foLind. A. F. Xapustinski.y, Cor.TeEl -iding 1~ezmber AS USSR, contri-
1-ted to 'he oaper Ic-;, --fn in a ad It i o n,
jIg ~j 4 S
M. S. Stakhancvp_ is mentioned Ln th-= parer. There are 3 tables and
20 referer-2es, 8 of ~which are Soviet.
ASS ~--C 1AT !ON, ',,osko-.rskiy khiLi-;k-o--tc-khn-,,c,-ichf~skiy Jns-tut imeril D. I.
leyeva, Kafedra obolichey ii neorrranic!~,~!3koy khimii (MOSCO-11 Insti-
:ute oi Che'-%ical Technol-,gy iia~_ni D. I. ?,"Iendeleyev , Chair of Gener-
al and I--.r:~anio Chpriistry)
Mlay 12, 1958
rT , 11

-112
1-57,3 /0 0
-5-~ 67031
Shneyder, V. A. SOV/153-2-5-1/31
AUTHORS. ~eliy Ao
TITLE: Phys1co-chemical Properties of the Selenates. VI. Solubility
of Calcium Selenate in Water at Different Temperatures
PERIODICAL: Izvestiya vysshikh uchebnykh zavedeniy. Khimiya i
khimicheskaya tekhnologiya, 19591 Vol 2, Nr 5, pp 651-656 (USSR)
ABSTRACT: The authors studied the solubility of calcium selenate
starting from the cryohydrate point to the boiling point of
the saturated solution. The results are given in table 1.
The chemical analysis as well as the microscopic and
roentgen examination showed that the composition of the ground
phase, i.e. CaSeO 4. 2H20 is constant between 0 and 101.81G.The
calcium content in this phase (obtained at 101.80) is 16.21%,
the selenium content is 35.8Wa. The refractive indices are:
20
N9 = 1-576? iTp = 1.563, d4 . 2.68, which were determined by
A. A. Mayer. Table 2 Droves that the interplanar spacings,
calculated from the roentgenogram according to Debye-Scherrer5
axe in accordance with the values of the previously synthepized
Card 1/4 crystalline CaSeO 4' 2H20 and with the interplanar spacings of

Physico-chemical Properties of the Selenates. VI. 67031
SOV/1 53-2-5-1/31
Solubility of Calcium Selenate in Water at Different Temperatures
the ground phase obtained by mixing the CaSeO 4' 2H20 in water
at O'b,. Table 1 shows that the solubility of the caIcium
selenate constantly decreases Yrith increasing temperatures.
By comparison with the solubility of gypsum, (Ref a") the hidh~_r
degree of solubility of the selenate, as compared -to the
sulfates (Ref 7), is again confirmed. The authors have
previously established (Refs 8, 9) that the temperature
coefficients of the solubility of SrSeO 4 and SrSO 4 on one hand,
and that of BaSeO 4 and BaSO 4 on the other, have opposite
signs, that of the selenates being negative. Therefore the
law of S. S. Chin (Ref 10) did not Drove true for the
selenates and sulfates of calcium, strontium and barium.
The authors did not succeed In determining- the solubility of
anhydrous calcium selenate in water. The data obtaLned by the
authors on the solubility of CaSeO 4' 2H 20 was used for the
I
calculation of the solution-temperature in water,which is
1.820 kcal/mol. From this it was possible to calculate the
Card 2/4 value of the integral solution-temperature according to the

67031
Physico-chemical Properties of the Selenates. VI. SO V/1 53-2-5-1/31
Solubility of Calcium Selenate in Water at Different Temperatures
following formula, with the preparation of a saturated solution
at25-C (Q ); H = C qsatur - qunsatur + Q in
satur saturCoatur - Cunsatur satur,
which 11-unsatur -2.031 kcal and C is a concentration of 1 mol
of saturated solution in 100/C mol of the solution agent. For
additional calculations they used the thermodynamic-data for
calcium ions, for selenate ions and for water (Ref 21). The
data concerning the CaSeO 4* 2H20 make possible the calculation
of the entropy. From its change in the reaction (1) exxd, with
consideration of the entropy-values of seleniumq oxygen,
hydrogen and metallic calcium (Refs 21, 22), the absolute
entropy of crystalline CaSeO 4* 2H20 is calculated. Professor
A. F. Kapustiaskiy, Corresponding Member of t1B AS U33R, is
mentioned in the article. The calcium selenate was prepared in
the "Krasnyy Khimik" ("Red Chemist") Works. There are
3 tables and 23 references, 12 of which are Soviet.
jard 3/4

67031
Physico-chemical Properties of the Selenates. VI. SOV/153-2-5-1/31
Solubility of Calcium Selenate in Water at Different Temperatures
ASSOCIATIONs Moskovskiy khimi-'Ko-tekhnologicheskiy institut imeni D. 1.
Mendeleyeva; Kafedra obshchey i neorganicheskoy khirdi
(Moscow Chemical--technological institute imeni D. I. IK
Mendeleyev, Chair of General and Inorganic Chemistry)
SUBMITTED- May 12, 1958
Card 4/4

5(2) SOV/78-4-7-3/'44
AUTHORS: Selivanova, N. M., Shneyder, V. A., Strelltsov, I. S.
TITLE: The Thermal Decomposition of Calcium Selenate (Termicheskoye
ra ~lozheniye selenata kalftsiya)
PERIODICAL: Zhurnal neorganicheskoy khimii, 1959, Vol 4, Hr 7,
PP 1481-1487 (USSR)
ABSTRACT: The heating- and cooling-curves of calcium selenate (Fig 1)
were plotted by means of the N. S. Kurnakov-pyrometer. The
temperature at the beginning of decomposition anti at complete
decomposition, the melting temperature, and the degree of ther-
mal decomposition between 200-11500 were determined. The salt
CaSeO 44 2H20 served as a starting basis. The heating curve up
to 6000 develops in a manner similar to that in -the case of
gypsum. The cooling curve is not in agreement with the heating
curve, because irreversible processes occur in the case of
heating. The aata of the analysis of the salt annealed at dif-
ferent temperatures are given by table 1. Table 2 mentions the
losses in weight at various temperatures. A microscopical in-
Card 1/2 vestigation of the salt heated up to 2000 shows it mixture of

The Thermal Decomposition of Calcium Selenate
SOV/78-4-7-3/44
Ca3eO *2H,O-crystals and fine needle-shaped crystals of the
4
non-aqueous selenate. Attempts made to produce the semihydrate
CaSeO I H 0 were unsuccessful. During heating, modification
4* 2 2
changes sometimes occur. At 6980 decomposition and conversion
into selenite begins: 2CaSeO 4- 0 2CaSeO3 + 0 2 with partial
volatilization. The final product i3 calcium oxide and an-
hydride of the selenic acid. The results obtained do not ex-
plain the reversible endothermal effect at 7660 of the heating
curve. The results of the Debye-Scherrer X-ray pictures are
given by table 3. As shown by table 4, calcium selenate is less
temperature-resis'llant than calcium sulfate. The refraction in-
dices of the crystals were determined by A. I. Mayer. There
are 1 figure, 4 tables, and 23 references, 10 of which are
Soviet.
SUBMITTED: April 11, 1958
Card 2/2

5(4), 240) SOV/176-33-1-23/45
i HO "S : I
J ! ,, Selivanova-, 11, bova, G. A.
TITLE: Thermodynamic Propertics of Strontium Selenate (Tei-nodinami-
cheskiye svoystva selenata stronts-iya)
i~ERICDTCAL; Zhurnal fiziche:~,":oy khimii, 1959, Vol 33, Ifir 1,
PP 1_41 - 146 (US~~R)
ABSTRACT: The thermodynamic propertics of strontium selerate have so
far not been investi.-ted. In a_naalogy to SrSO 4' Sr3e 04
should be little soluble in water and thus the thermodynamic
constants can be determined from the solubility and the 0
precipitation heat. The solubility of SrSeO 4 ir water at 25
was determined and calorimetric determinations of the pre-
cipitation heat from an aqueous solution under standard
conditions were carried out. The experimental e.ata obtained
were elaborated thermodynamically. SrSeO 4 was produced from
re-crystallized Sr(110 3)2 and selenic acid (Ref 2). A. 1.
Ilayyer determined the refraction index. The value of the
Card 1/3 solubility product of SrSeO 4 in water at 250C obtained

Ther--odynazi-41c _-Prol--crtuies of S'.rontium Sclen~te SOV/7 6-31 3 -1- 2 3/4 5
by polaro,~-raphic and -ravimetric det-2rminations is
4.
3-75-10 Tile c' an of free on precipita'ion is
Sr 2+ +Z')'e 02- = SrSeO 60c.10 cal. The precipitation heat
it 4
of SrSeO 4 is -140 cal. Under standard conditions the free
formation energy from the el:ients is -244.1' kcal/mol and
the formation heat -275-37 kcal/mol. The prEcipitation
heat was determined from an aqueous potassitz selenate
solution and crystalline SrCl 2' 6H20 in conncction with a
heat radiation correction carried out according to the
Renault-P'Laundler-Usov (Renlo) equation. A precipitate was
obtained in the form of lon.- transparent needles and was
verified as SrSeO 4* The absolute entropy of SrSeO,, is
S298 = 'a" 2 entropy units. The entropy of -;he selenate ion
in water is SeO2 : S
4aq 298 ~ 5.48 entropy un::ts. In con-
clusion the authors thank A. F. Kapustinskiy. There are
Card 2/3 1 figure, 4t tables, and 14 references, 7 of rhich are Soviet.

Thermodym~mic Properties of Strontium Selenate SOV/76-3,3-1-23/45
I
ASSOCIATION: Khiril-o-tekhnoloaicheskiy in-Ititut im. D. Ir. Lendeleyeva3
Moskva (Clier-.icil-Tec.~inolo-i,-.oI Institute imoni 1). 1. ','ien.-2e-
L"
leyev, !."Oncow)
SUB'!I'PTF,D: JulY 1, 1957
Card 3/3

05841
5(4) SOV/76-33-10-39/45
AUTHORS: Selivanova, N. M., Zubova, G. A., Finkel'shteyn, Ye. I.
TITLE: Thermodynamic Properties of Silver 5elenate
PERIODICAL: Zhurnal fizicheskoy khimii, 1959, Vol 33, Nr 10,
pp 2365 - 2369 (USSR)
ABSTRACT: Thermodynamic investigations of silver selenate, including those
by Metzner (Ref 1), Meyer and Hinke (Ref 5) as well as Gelbach
and King (Ref 6) have not yet yielded compatible results. These
investigations were therefore checked in this article with the
application of two different methods, namely determ--nation of the
solubility of Ag 2SeO4 in water at 250 and calorimetric determina-
tion of the heat of precipitation of A g2 SeO4from acueous solutions
under standard conditions with subsequent thermodynamic interpre-
tation of the resultant experimental data. The solubility of
Ag2SeO4 (Table 1) which was turbidimetrically determined, is
closer to.the data of reference 6 than to those of reference 5- It
Card 1/2 amounts to 1.26.1o-3 mol/l. The heat of formation of Ag2 SeO 4-cryst

05841
Thermodynamic Properties of Silver Selenate SOV/76-33-10-39/45
was determined by means of an isothermal calorimeter (describEd
in reference 4) produced from silver nitrate solu-.ion and selenic
acid solution (Table 2: heat of dilution of a T-07m. H 2Seo4 so-
lution) . Radiati or. losses were corrected acccrding to the Regna7alt-Pfaund-
ler-Uaav formula. The values obtained for the heats of precipitation
(heats of formation in aqueous solutions) Of Ag2 SeO4 are listed
in table 4, data of the radiographs of the resultant precipitates
are given in table 3. The values 6-Ho 29,.1C-105,-C5 kcal/mol
and,& F 029,.16=-8076 kcal/mol are given for the reaction
2 Ag cryst +Se cryst +20 2 gas~A92Se'4 cry st as well as the calculated
entropy of the ion SeO . : S 0 -5-50 units of entropy. In
4 aq. 298.16
conclusion, the authors thank A. F. Kapustinskiy, Correpsonding
Member of the AS USSR for nis critique. There are 4 tables and
9 references, 5 of which are Soviet.
ASSOCIATIONz Khimiko-tekhnologicheskiy institut im. D. I. Mendeleyeva Moskva
(Institute of Chemical Technology imeni D. I. Mendeleyev, Moscow)
SUBMITTED: MaY 4, 1958
Card 2/2

SELIVANOVA, N.M.; SHHEYDER, V.A.; STRELITSOV, I.S.
Physicochemical study of selenates. Part 9: Thermal
decomposition of magnesium selenate. IZV. VYB. ucheb.
zav; khim. i khim. tekh. 3 no. 5:787-793 160.
(MIRA 13:12)
1. Moskovskiy khimiko-tekhnologicheskly institut iment
D.I.Mendeleyeva. Kafedra obahchey i neorganichesko7 khimii.
(Magnesium seleuate)

S/063/60/005/'O'-)",,/O',--"/'() I 1/XX
A05 I/AO29
AUTHORSs Selivanova, N.M., Shneyder, V.A.
TITLEi On the Thermal Decomposition of Magnesium Selenate
PERIODICALs Zhurnal Vsesoy-uznogo Khimicheskogo Obshchestva im. D.I.
Mendeleyeva, -1960, Vol. 5, No. 3, pp. 353-354
TEXT.- A study was made on MgSeO -6R2O usually stable under normal conditions.
A,:~cording to the experimental anilysis, the content of magnesium and sele-
ni= in the initial salt was 6-59 and 28-78%, compared to the theoretical
values of 8.83 and 28.68%; d20 - 2.01- N - 1-495; N 1.464. The behavior
of this salt at high temperalures was'inqestigated b_Y recording heating and
cooling curves with a Kurnakov pyrometer. The experimental procedure was as
followst the salt was placed in a corundum crucible, which was inserted into
a ceramic block. The heating rate of the furnace was 8-100C per min. Magne-
sium oxide was used as the inert substance. The thermocouple was platinum-
platino-rhodium. Fig.1 is the curve of the heated product. The cooling
Card 1/e

S/063/60/005/003/009/011/XX
A051/AO29
On the Thermal. Decomposition of Magnesium Selenate
curve of the magnesium selenate does not correspond to its heating curve,
J..e., the processes which take place during heating of this salt under ex-
perimental conditions are non-reversible. Fig 2.is the curve of the an-
hydrous magnesium selenate plotted linder the. same rjonditionB. It shows no
thermal effects up to 4000C. All the thermal effects below the indicated
temperature are determined, therefore, by the dehydration of this salt and
by phenomena connected with this process. A study was made of the change in
weight and composition of magnesium selenate in order to establish the
causes of the existing t-re.-,rrc,1 or. the cb--ained curves (Fig. 1 2)q I.e. , of
hexahydrate and anhydrous salt during heating. The salts were oalcinated
in a crucible oven, into 11hich an open corundum crucible was placed, con-
taining the material investigated; the calcination lasted f-:z 1 hoar without
admission of air into the working spa,,e of the furnace. Fig-3 shows 0the
,_change in composition of MgSeO *6H20 during the calcination. At 100 C the
weight loss represented 13.5%,,.4 % in
as against the theoretical value of 13.1
the +.rangformationi MgSeO 6H O-;~Pmgseo 0 The data of the chemictal
4* 2 4*4H2
Card 2/e

'j /Oi~ I! , f I
~ 1 j.,/60 hl,~il l /xy
A051/AO29
On the Thermal De-;omposition of Magnesium Selenate
analysis oonfirm this transformation. The Debyegram. of the product obtained
at 809C 4-9 similar to the rcentgeno Iram of previously synthesized pure
MgSeO *4H20; the specific gravity d 0 - 2.21 corresponds to the game value
of SyAth esized MgSeO *4H 0. Thus, 4the first endothermal effect (at 600C)
4 2
cn the heating curve is explained by the transformation (1). The high endo-
thermal effect at 1180C on the heating clarve is explained by the further de-
h.ydration to a mixture of tetra- and monohydrateF, which is accompanied by
a partial' redu~~r-icn Se6+-)-Se4+ and the partial volatilization cf selenium.
The effel~t at 260--2300C corresponds to the complete dehydration of magnesium
selenate.- According to the analysis the content of magnesium in the products
of -,al3ination of MgSeO *6H 0 at 300 and 4000C is 15.50 and 16.55% as against
the the--jretlcal value of 14~52% for MgSeO 4. Lines characteristic of MgSeO
are predc.minant on the Debyeg~rams of these products. The endothermal effelt
at 1700C 4-9 explained by the f,~rmation of the intermediary product of de-
hydratl--.)7a~ the composition of which was not established. The slight exo.-
thermal effect at 4500C is determined by the oxidation of Se4+ to Se6+, and
Ca.rd 3/8

S/063/60/005/003/009/01 1,/-u
A051/A029
On the Thermal De:!f.~mposition cf Magneeium Selenate
the effe,.-t at 6200C is c.aused by the partial decomposition of MgSeO w--th
the f.-)rmation of magnesium selenate, The endothermal effects on thl heating
:curves ~,f MgSeO *6H 0 and MgSeO at 760 and 7700C correspond to the complete
4f 2
d,~.~ompoq_ition 3 magnesium selinate to magnesium -oxide. The weight loss ef
the salto at these temperatures is about 86-03% for MgSeO 4,6H 0 and 7r.68%
for MgSeO as against the theoretical -values of 85.94 and 76.i8%, respja"'t-
ively. f0f the transformationa
MgSeO *611 0-->,MgO and MgSeO *4H O-PMgO, respectively. The data of a chemloal
. 4. 2 4 2
analysi5 and X-ray studies confirm this transformation. The data in the
table sh.-,w that the liberation of the first molecules of water from magne-
sium selenate take2 pla3e earlier than in sulfate, but the last mc-lecule in
b~.th sal-14 _i-- neparated with difficulty. For magnesium sulfate this is ex-
plained t-y the different bond of this m-_~lecule of water with the ealt (Refs.
1A) :r by its different position in the crystal. lattice (Re:L"5-7). The
same explanation is offered for magnesium selenate salt due to the Aiso-
Card 4/8

310631--0100510031.0091'011 /)1j.
A051/AO29
On the Thermal Decomposition of Magnesium Selenate
morphism of these salts. Comparison of the melting points of the two salts
shows that the selenate is thermally less stable. This fact was established
formerly (Ref 8,9). There are 3 graphs, I table and 9 references: 7 Soviet,
2 German.
SUBMITTED: April 16, 1959
'04rd 5/8

8h215
~-.~Zfoj 0 d,,,o 2 ~Dfe S/07 60/005/010/010/021
S B004YB067
AUTHORS-. Selivanova, 11. M, Shneyder, V. A., Strelltsov, I. S.
TITLE: Thermal Decomposition of Beryllium Selenate VI
PERIODICAL: Zhurnal neorganicheskoy khimii, 1960, Vol- 5, No. 10,
pp. 2272-2279
TEXT; By means of the Kurnakov pyrometer the authors took the heating and
cooling curves of beryllium-selenate tetrahydrate in the temperature range
50 - 8000C (Fig. 1). They compared them with the curves obtained for
anhydrous beryllium selenate (Fig. 2). From these data as well as from the V~
analyses of the residues on ignition of BeSe04.4H2O (Table 1) and BeSe04
(Table 2), of the loss on ignition of these substances (Table 3), and the
Debye-Scherrer X-ray picture (Table 4), they obtained the following
results: At 750C, BeSe04.4H20 passes over into BeSe 04 .2H20- At 1460c,' a
further water loss occurs; and at 213OC9 anhydrous BeSeO 4 is formed. These
processes are accompanied by a partial reduction of Se6+ to se4+ and a
Card 1/2

Thermal Decomposition of Beryllium S/078~0005/010/010/021
Selenate B004/BO67
partial volatilization of Se. Decomposition occurs at 46o - 56oOc. BeO is
formed without melting of the reaction product. As may be seen from Table
5, dehydration of BeSe04-4H20 starts at a temperature lower than that of
BeSOOH20. Table 6 lists the decomposition temperatures of the selenates
and sulfates of the series Be, Mg, Ca, Sr, Ba. Fig. 3 shows the following
thermal stability of the selenates: BeSeO 4 < ?AgSeO4< CaSeO4 < SrSeOr
< BaSeO 4' The lower thermal stability of the selenates compared to the
sulfates is explained by their lower heat of formation and lattice energy.
The authors menzion papers by S. D. Shargorodskiy and Ya. A. Fialkov
(Ref. 17) and Vikt, I., Spitsyn, and V. 1. Shostak (Ref. 22). There are 3
figuresq 6 tables, and 30 references: 16 Soviet, 3 US) I British, 4 German,
5 French, and I Austrian.
SUBMITTED; July 3, 1959
Card 2-12

8q607
r ZOO 2-7-05 1 1111, 1041
AUTHORSj Selivanovay W. 11.9 ShneEjaEL
TITLEj Production of Crystal Hydrates
PERIODICAL: Zhurnal neorganicheskoy
pp. 2269-2271
S/078/60/005/010/027/030/XX
B017/3067
V_ A-, and Strelltsov, I. S.
of Magnesium Selenate 711
khimii, 1960, Vol- 5, No- 10,
TEXT& The crystal hydrates of magnesium selenate were eyuthesized. The
compound MgSeOA*6H20 was produced by dissolving a stoichiometric amount of
purest magnesitim oiide in selenic acidg and subsequent crystallization at
room*temperature. Its specific gravity is 2.01; MgSeO 4.6H20 has the fol-
lowing refractive indices; Ng = 1-495 � 0.002, NP = 1.464 + 0.002. The
interplanar spacings (d) and the relative lines of intensity of the X-ray
pictures of the following compounds are summarized in a table:
MgSeO 4a 6H20, MgSeO 4* 4H2 0, XgSeO 4*H20, and MgSeO 44 By heating the crystals
of NgSeO4.6H 20 in the air bath at temperatures of 40 and 700C, a crystal
hydrate MgSeO 4* 4.5H 20 is formed. By heating the crystal hydrate
Card 112

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.0kow (PolytechnLa La& Ituto inezi 1. . LO%Lz, M&r'kov)
3=1=21 J.11 21, 1958
C"6 )/3

- SELIVAITO'-:7A, UJI.; PAOORL1011, K.I.
Heats of solution of selenious acid. Izv.vys.ucheb.zav.;khim.i ~10
khim.tekh. 4 no.3:355-358 161. (MIRA 24:10) A'.
1. Moskovskiy khimiko-telchnologicheskiy institut imeni
Mendeleyeva, kafedra obshchey i neorganicheskoy khimii.
(Selenious acid)
(Heat of solution)

I-- SELIVANOVA, N.M.; SH111-YDER, V.A.; HYABOVA, R.I.
Heat of fo-mation of rAggrnesiun selenate from the elements. Zhur.
neor.-. khim. 6 no.1:27-33 161. (MIPA 14:2)
(Magnesium selenate) (Heat of formation)

1) ~0 S/,'-)7 61/035/003/0010/023
ill C. B1 21 YB203
AUTHORS: Selivanova, IN. M. and Shneyder, V. A.
TITLE: Physicochemical properties of selenates. X. Heat of forma-
tion of beryllium selenate from elements
PERIODICAL: Zhurnal fizicheskoy khiulii, v. 35, no. 3, 1961t 574-579
TEXT: The heat of reaction of beryllium selenate tetrahydrate with an
aqueous solution of barium chloride at 250C was determined with an isother-
mal calorimeter. The heats of formation of the crystalline beryllium salts
BeSeO 4* 4H20, BeSeO 4' 2H20, and BeSeO4were also determined. BeSeO 4* 4H2 0 was
supplied by the "Krasnyy khimik" plant and recrystallized twice before use.
The correct composition of this salt was confirmed by chemical analysis.
The heatofformation of BeSeO *4H 0 is: AHO = -505.54 kcal/mole. The
4 2 298.16
heat of formation of crystalline BeSeO 4' 2H20 from elements was determined
from the hydration heat of this salt by the equation:
BeSeO 4' 2H20cryst + 2H 20liqu = BeSeO 4* 4H 20cryst + Qhydration* Compound
Card 113

S/076/61/035/003/009/023
Physicochemical properties ... 3121/B203
BeSeO 4* 2H2 0 was obtained from BeSeO 4* 4H20 by storing in an exsiccator over
P 0 within 10 days. For BeSeO 2H 0, AHo -360.62 kcal/mole.
2 5 4' 2 298.16 = j
BeSeO4 was obtained by dehydration of BeSeO 4* 2H20 in a thermostat at
215-2200C within 6 days. To determine the hydration heat of BeSeO 41 the
authors first determined the heats of solution of BeSeO 4' 2H 20 and BeSeO 4
in 1.0 N KOH (dilution 1 : 3600) at 250C. The mean heat of solution of
BeSeO 4* 21120 is 26.23 + 0-15 (� 0.60%) kcal/mole, that of BeSeO4 is
fo) kcal/mole. The value AHO 213.26 kcal/mole
37-15 + 0,,20 (� 0-55~/ 298.16 ~ -
was found for the heat of formation of BeSeO 4 from elements. The heats of
formation of beryllium selenates are lower than those of beryllium sulfates;
this indicates that beryllium selenates are unstabler compounds than the
corresponding sulfates. There are 5 tables and 20 references: 9 Soviet-
bloc and 11 non-Soviet-bloc. The four most recent references to English-
language publications read as follows: G. Marchal, J. Chem. Phys., 22, 342,
1925; K. K. Kelley, Bull. Bur. Mines (USA), 406, 1937; F. Rossini,
Card 2/3

S/07 61/O3'-/OO';/GO9/O23
Physicochemical properties ... B121 Y3203
D. Wagman, W. Evans, L. Levine, I. Iaffp, Selected values of chemical ther-
modynamic properties, Nat, Bur. Standai-ds, 1952, Washington; N. V. Sidgwick,
N. B. Lewis , J. Chem. Soc. , London, 1290, 1926.
ASSOCIATION: Khimiko-tekhnologicheskiy institut im. D. I. Mendeleyeva
hloskva (Institute of Chemical Technology imeni D. I. Mendeleyev,
Mosnnw)
SUBMITTED: July 1, 1959
Card 3/3

SELIVANOVA, N.M.; SHNEYDER, V.A.; SAZYKINA, T.A.
Physicochemical properties of selenates. Part 12- Heat of for-
mation of lithium selenates from elements. Izv.vys.1dc4eb.zav.;-
khim.i khim.tekh. 5 no.2-193-187 162. (MIRA 15:8)
1. Moskovskiy khimiko-tekhnologicheskiy institut imeni D.I.
Mendeleyeva kafedra obsbahey i neorganicheskoy khimii.
(Lithium selenates) (Heiat, of formation)

SELIVANOVA.. N M.- ZUBOVA, G.A.; KALINKINA, A.A.; SAZYKINA, T.A.
Physicochemical propdFties of selenates. Part 15: Be4avior
of rubidium selenate during heating. Izv.vys.,uchlzav.; khim.i
khim.tekh. 5 no.4.524-528 162. 1(MIRA 15:12)
1. Moskovskiy khimiko-tekhnolog:Lcheskiy institut imeni
D.I. Mendeleyeva, kafedra obshchey i neorganicheskoy khimii.
(Rubidium selenate)

2LI00
33276
5/078/62/007/002/002/019
B119/B110
AUTHORSt Selivanova, N. M., Sazykina, T. A.
TITLED- Thermal decomposition of lithium selenate
PERIODICAL! Zhurnal neorganicheskoy khimii, va 7, no. 2, 1962, 240 - 243
TEXT: The investigation of the thermal behavior of selenates is of
interest for the recovery of Se from sludge; the production of
luminophores, enamels, and glazes; and in the glass industry. Thermal
analysis Of Li2 SeO 4' H2 0 was performed with a recording Kurnakov pyrometer
(heating rate 6 - 8 deg/min; temperature measuring with a Pt - Pt/Rh VY
thermocouple), The decomposition products were studied by chemical and
x-ray diffraction analyses. The change in weight of the substance with
increasing temperature was studied. Results: Li 2 SeO 4' if20 shows three
significant endothermic effects. The first effect at 150 - 1900C
corresDonds to the reaction LiSeO 4'H20 :~Li2SeO4 ; Se 6+ is partly reduced
4-1-
t0 Se , The second effect (at 680 - 6900C) corresponds to the congruent
'lard 1/2

33276
5/078/62/007/002/002/019
Thermal decomposition of_ B119/B11O
melting of Li2SeO 4' At 8400C (third effect) the melted Li 2SeO4 is de-
composed as follows: Li 2SP-04 )Li 2SeO3 + 112 02' A paper by
V~ I. Spitsyn, V. I. Shostak (Ref. 11: Zh. obshch. khimii, 199 1601
(1949)) is mentioned among others. There are I figure, 1 table, and
:0 references. 6 Soviet and 10 non-Soviet- The foi;r references to
Engl-..sh~-lan.guage publications read as follows, V_ Lehner, E. Wechter, J.
Amer., Chem, Soo- 47, 1523 (1925); D. F. Adams; L. I. Gilberston, Ind.
Eng, Chem, Anal. ~_d, -14, 926 (11942); L. R. Rogers; F. K- Calley, Ind.
Eng, "hem, Anal. Ed., 1:',, 209 (1943); R. M. Gruver, J. Amer, Ceram, Soc.,
34., 353 (.1951).
SUBMITTED.z February 24, 1961
Card 2/2

SELIVANOVA, N.M.; SAZYKINA, T.A.
Heat of formation of sodium selenate decahydrate. Zhur.neorg.khim.
7 no.3:536-539 1-tr 162. (MIRA 15:3)
(Sodium selenates) (Heat of fo-rmAticn)

SELIVANOVA, N.M.; MAYYEER, A.I.; SAMPLAVSKAYA, K.K.
Thermal decomposition of copper selenate. Zhur.neorg.khim. 7
no.5:1074-1033 My '62. (MIRA 15-7)
(Copper selenate--Th~rmal properties)

3/076/62/036/006/007/011
B1 1 7/B1 313
i vino-ia, N. i. , Let;lhchinskay a, Z. L. , and Klushina, T. V.
a i chemical Droperties of selenites. I. Thermo-
of silver selenite
~61J_1`11L: Zurna-` rizilcheskoy khimii, v. 36, no. 6, 1962,
1549 - 1352
This is a short ret,)ort on u study of the thermodynamic properties
of silver seleni',-. Tho '-.eat. of precipitation of silver selenite from
aqueous solutions (mean value 10-68 � 0.05 kcal/mole) was measured and its
solubilit in vater (mean value 2.65-10 16 ) determined under normal condi-
tions (25 C). From the'results, the formation of silver selenite
2 A -c ry o t+ Se c r,, st + "Ilz 02 Gas -Ag2SOO 3 'cryst
from ele7ilents, chanc-e in 'tree enerr (isobaric potential), and the.heat of
o _y
formation were calculated: ~z
296.16 ~ -73.64 kcal/mole, _AH 296.16
-32-45 kcal/mole. From the values obtained, 0the absolute entropy of
crystalline silver selenite ~.%,as determined; S2q,8.16 ~ 74-36 entropy units,
Card.1/2

Physical and chemical .)ro.-erties ... B117/:5133
and fr~)m it, th~ entro,)y of a hydrous selenite ion was calculated:
S0 3-9-9 entropy units. This is consistent -.kith the figure (3.9
entropy units) found by F. Rossini, D. Evans, S. Levine and
!.Iaffe (Selected values of chemical t1lermodynamic properties, 1'.ashington,
-ure and 3
!~%~,2) in experiments -Nith seienic acid There are 1 fie tables.
T I (j '.'~i-.-,i',.co-tek:-~nolo--icheski,.- institut ini. D. I. Mendeleyeva
A63CCIA I
(Iristitute of Chemical Technology imeni D. I. i~'Iendeleyev)
3~,T`~;D: %u-ust 22, 1)61
Card 2//2

KIJDRYA.VTSEV, A. A. ; SELIVANOVA, N.M. ; DRAKIN, S. I., dots. ; MAYYER,
A.I.; SAMP KA K.K.; SOLOKHIN, V.A.; STAKHANOVA,
M.S.; BUNDEL', A.A., prof., retsenzent; KARAIETIYANTS, M.Kh.,
doktor khim. nauk, prof., red.; MELNIKOVA, T.I., red.
[Laboratory work in-general and inorganic chemistry] Prakti-
kum po obshchei i neorganicheskoi khimii. (By] A.A.Kudriav-tsev
i dr. ?4oskva, Mosk. khimiko-tekhnol. in-t im. D.I.Mendeleeva.
Pt.2. [Work in the chemistry of elements] Ral:x)ty po khimii ele-
mentov. 1963, 122 p. (MIRA 16:10)
(Chemistry--Laboratory mAnuals)
(Chemical elements)

SELIVOOVA, N.M.; SAZYKINA, T.A.
- ------ -- - -1 -
Physicochemical study of selenates. Part 21: Heat of formation of
rubidium selenate. Izv.vys.ucheb.zav.; khim.i khim.tekh. 6 no.4:
531-533 163. (MIRA 17:2)
1. MnskoVAly khimiko-tokhnologicheskiy institut im. Mendeleyeva.
Kafedra obshchey t neot-gantcheskoy khimii.

SELIVANOVA, N.M.; KARAPETfYANTS, M.Kh.
Approximate evaluation of the molar volumes of selenates. Izvv7P-ucheb.
zav.; khim.i khim.tekh. 6 no.4:534-542 163. (MIRA 17:2)
1. Moskovskiy khimiko-tekhnoloaicheskiy institut im. 14endeleyeva.
Kafedra neorganicheskoy khimii.

SELIVANOVAP N.M.; KARAPETIYANTS, M.Kh.
Energy of crystal lattices of sulfates, selenates, tellurates.
Izv.vya.Wheb.zav.; khim. i khim. tekh. 6 no.6:891-895 163.
(MIRA 17:4)
1. Moskovskiy khimiko-tekhnologicheskiy, institut imeni Mendeleyeva.
kafedra obshchey i neorganicheskoy khimii.

"PI/6-3/m) A/ no 31/o(j3,/o7o
BI WB I a6
A,i JT -,,-~P 7, 'jelivanova, N. M., Leshchin2k.~,--~-,, Z. L.
Ther.-iodynamic propertuiez; -)f ,jL
101', 7'-lurnal neorganicheako
y It, 'n v n f.~ 56.5-566
E:U : T'ne Iheat of the reaction between strontlum chloride ami oadium
gelenite was zme-3,iured at 250C using a calo-r-Imeter de--cribed earlier
~T-i.,--. Selivanova, A.F. Kapustinskiy, *Q. A. Zubova, lzv. AN SSSR, Otd.
khimi. n., no.2, 187 (1959)). The values olotained and the data detoxmineid
by lv.G. Chukhlantsev for the oolubility of s-~Irontium selenithe ware osed
to c,~Irulate thp heat of formation of stronti--.2a, Selenite ihe isobaric
potential, and 'he.entropy of crystalline SrSc~D.. and of Seo2- under
0 0
standard conditions. 811 98 = -gr,0.55 kcal ar'd IM, - -230-84 kcal were.
2* 2,98
found for the reaction E3r + Se + -,1'2 0, - Srseg
cryst crys~ ZI ga - 3 cryat'
- 30.36 enbrap~r unita.
Standar,] entropy of crystalline SrSeO7 298
Entropy of the aqueous ion: So
208 = -4-07 ertropy units. There are 1
Cj-] 1/2

Thermo,l,,Tnamic properties of . . .
figure an," 1 table.
A S 0 C I 1"i 10 N Moskovskiy inutitut im. D.1.
hienrlelpyeva (Mo-qcow Inotl~luito o-C C~cmical Technology iineni,
D. 1. Merideleyev)
SUBPATITT77~ UaY 7, 1962
C
'ard
212

S/078/63/OU8/003/Oi6/020
B117/B186
AU Tit OR S: Leshchinskaya, Z. L., Se1ivanova,_H,__M.j Strellteov, I. S.
TITLE: Heat of formation of barium selenite
1 Q D I CA L -Zhurnal neorgarli.cheskoy khimii~ v. a, no- 31 19631 f6-3-764
'T:
1
-2, The heat of formation of barium selenite in the reaction of
oodium 3elenite with barium chloride was measured in a calorimeter at
25oC for the first time. The presence of crystalline barium selenite
proved by x-ray diffractionoanalysis. The standard heat calculated
accordiri,- uo Hess's law was A11998 = -249-31 kcal/mole.. There are 1.
;'i.vure and 1 table.
ASSOCIATION: t.,Toskovskiy khimiko-tekhnologicheakiy institut im.
D.1. Mendeleyeva (Moscow Institute of Chemical Technology
imeni D.I. Mendeleyev)
SUB,','1ITTED: Yay 7, 1962
Card 1/11

LESHCHINSKAYAJ. Z.L.;_SELIMO", N.M.; MAYYER, A.I.; STRELITSOV, I.S.;
MUZALEV., Ye.yu.
Heats of formation of nickel selenites and cobalt selenites.
Zhur. VKHO 8 no.5:577-578 163. (MIRA 17:1)
1. Moskavskiy khimiko-tekhnologicheskiy institut imeni
Mendeleyeva.

SELIVANOVA, N.M.; MAYYER, A.I.; LUK"YANOVA, T.A.
Heat of forration Of Zn selenate., Zhur. neOrg. khim. 8
no.11:2428-2433 N 163. (MIRA 17:1)

MAYYER A.I.; SAMPUVSKAYA, K.K.; SELIVANOVA, N.M.
.1 ---- -- - -1-- -1. ~,~ - -- - i . .
Thermal decomposition of copper selenite. Zhur. prikl. khim.
36 no.8:1659-1664 Ag 163. (MIRA 16:11)

- - - - - - - - - - -
S/076/63/037/003/013/020
MOM
AUTHORS: Selivanova, N. M., Leshchinskayat Z. Le, Strelltsov, N. S.
TITLE: Formation heat of cadmium.selenite
-PERIODICAL: Zhurnal fizicheskoy khimi3*., V. 37, no. 3, 1963,~668-670
TEXT: The standard heat of formation of CdSeO was determined
3
calorimetrically by causing CdCl to react with Na SeO .- Radiographicall
2 2 3
0,
amorphous'CdSeO was obtained and AH -137-04 kcal/mole was found on
3 296
the b4sis of data obtained by F. Rossini et al. (Selected values of
chemical thermodynamic properties, 'Washington, 1952). The integral heat 1
of solution of'orystalline Na SeO is -7r05 kcal/mole for a,concentration"
2 3
of 1 400. There are 1 figure and 2 tables.
ASSOCIATION: Moskovskiy ordena Lenina khimiko
-tekhnologiAeskiy institut,
;meni D. I. Mendeleyeva (Moscow "Order'of Lenin" Institute
of Chemical T~--chnology imeni D. 1. Mendeleyev)
Card 1/2
. ...... ...... .... .. --- --------

SELIVANOVA N.M.; LESHCHINSKAYA, Z.L.; MAYYER, A.I.; STRELITSOV, I.S.; MUZALEV,
- - t-
- - 1. -yi.~6--.-
I
u .
Thermodynamic properties of NiSeO3, 2H20- Zhur.fiz.khim. 37 no-7-.1563-
1567 Jl 163. (MIRA 17-2)
1. Moskovskiy khimiko-tekhnologicheskiy institut imeni Mendeleyeva.

-SELIVANOVA, N.M.; MATZER, A.I.; LTJKIYA-N'C)IIA, T.A.
pr%--pefties of ;,~Ien;ates. ZZ lir.*"iz.',-hi.,Il. 37
"I . - I
llr(.42 JI I C'-'- 3 , (MIRA 17-2)
1. Moskovskiy khimiko-tekhnologicheakiy institut imerd Merideleyeva.

SELIVANOVA, N.M.; LFSIICHINSKAYA, Z.L.
Heat of transitIon oil a nonequil-ibri-am (amorphous) form of
nickel selenite to an equilibrium (crystalline) one. Zhur.
neorg. khim. 9 no.2:259-263 P64. (MIRA 17:2)

IT:~ kr-.~-P-l 'n!,(-

DRAKIN, Sergey lvanovi~-~h,, KUDRYAVTSEV, Aleksandr Andreyevich:
SELIVANOVA, Nadezhda Mikhaylovna; MAYYER, Antonina
I-vanovnaz SAMPLAVSKAYA, Kira Karlovna,- SOLOKHIN, Viktor
Alekseyevich; STAKHMIOVA, Mariya Sergeyevna; ALAVERDOV,
Ya.G., red,; FEDOROVA, T.P., red.; KARAPETIYANTS, M.Kh.,red.
(Laboratory work in general and inorganic chemistry]
Fraktik,7zn po obshchei i neorganicheskoi khimii. Moskva,
Vysshaia shkola, 1964. 268 p. NIRA 18:4)

I T. A. ; ST!-l-'FLiTSe-,'
ly of' sodi--im
kli,i--n. Lekh. 7 nu.3-Y;5-372
i, -U-,~-ovskiy 'IL
le.,Teva, kafedra obshchey i

SAMI'LAVSK.,"Y:': , H.K. ; 3ELI%'Al*;C"T~;*'- I
T", C- alla Ist a bi Li ty cil -iron 3e len ate. I zv. uci:eb . 2 a-.,.; im, .
A klnini. telch. 7 nc.4:54")---543 164.
OURA 17:12)
1. Kafedra obsl~riie:., ' neor~mnicheskoy khimii I-loskovskogo khimiko-
Instituta i-n. -'e -d eyeva.
e i an c, 1

IOSHCHINSKAYA, Z-1-- SE-11VANOVA, N.M.
T
hermodynami c properties of calcium selen, te. Trudy ITHTI no.4,4237-40
t 64. (MIRA. 18 8"-, )

Sll,.JVANOVA N.M.- LESHCHINSKAYA, Z.L.; MAHER, A.T.; MUZ,d.EV, Ye.Yu.
-- 1~
T I Iprcperties -
berm.odynamf- - ' uf Cobalt selerJ4 te (ct S-03.2H 0). Izv. vys.
ucheb.zav.; khir.--.. I khLm.tekh. ', no.2:209-216 164. (MIRA 18:4)
1. Moskovskiy khimiko.-tekhnologicheskiy institut 4-m. D.T.
Mendeleyeva,, kafedra obshchey i neorganicheskoy k~imii.

SELEVANOVA, N.M.; SHNEYDER, V.A.
Refractive irdex and refraction of selenates. Zhur. fiz. Lh-4--.
38 no.7:1822-1824 J! 164. (MIR; i8:3)
I
u
1. inslitut imeni Mendeleyeva.

7 ~ Efi,. N!'! I y -, -, ~,~ , I . ~
MAME-R., A.!.; SELWANG','A, N.".; . ~. ~ -- -" .
. I 1 1, e... i 4
flc-.at (,f fcrraat~on of cobalt hur.fiz.'-~-m- 39 nc).7:1-?'t'-,-
1.750 J-L lfj5, (m--lR.t 18:8)
1. Moskovskiy l~hi.m-ikc)-tellinolcjg-c-,Iieski3r institut lrqeni D.I.
f~~--ndeleyeva.

ZUBOVAJ- G.A.; PRYMOVA, L.A.; SELIVANOVA, N.M.
Therna-1 degradation of manganese selenate. Izv. v-js. ucheb.
zav.; kh1m. i khim. tekh. 8 no.3:367-3'12 165.
(MIRA 18:10)
1. Moskovskiy institut narodnogo khozya-ystva imeid Plakhanova,
kafedra obshchey khimii.

s s kr,.-
~nd strcn~~myn
Ira

L&--,'jj(,[TlN3'KAYA, Z.L.; SELIVANOVA, N.M.
Thermodynamic properties of copjRr selenites. Zhar.fiz.killm.
39 no.10:2430-2434 0 165. (MIPJi 38:12)
1. Moskovskiy k1didlo-tekl-nd . eskiy institut iment
dogla
Mendeleyeva. Submitted June 19, 144.

zn- -7,
C*ttm raw;
7,i" OFk
laN, ~.Mvw
film. N. Z~E valmvw m
.1,
IFF
umer-
Tay

GRIBUYNDOV, D.N., professor; PREMEGRENSKAYA, I.A., dotaent; VULOTSKAYA,
S.L.. inzhener; ;iELIVANOVA, N.P., inzhener.
Av-a~wl~
The use of hydrogen peroxide for bleaching cotton fabrics of
doubled yarns. Tekst.prom. 16 no.2.36-39 F 156, (KLRA 9:5)
(Hydrogen peroxide) (Cotton finishing) (Bleaching)

BOGDANOV, K.A.. SHLIVANOYA, N.Y.
Certain esters of undecylenic acid. Masl.-zhir.prom. 25
no.11:32-33 '59. (MIR& 13:3)
1. Kaluzhskiy kombinat sinteticheskikh dushistykh
vashchestv.
(Undecenoic acid)

SELIVAINOVA, N.V.
Measlires for controlling helminthiasis in anirrals in Moldav--a. lveteri-
nariia no.12-6-8 D 163. (I-GRA 17-2)
1. Starshiy veterinarnyy vrach Upravleniya veterinarii Ministarstva
proizvodstva i zagotovok sel'sko6ozyaystvennykh produktov Moldavskoy
SSR.

I T T
of the size -f cell nuclei in inter-varietal hybridization and, .~' ~ra -!'ta[, e
of trees. ~rildy inst. lesa (6, 1951.
U. ~
1"onth1v -ISU of Russian Accessions, Library of ConEress
7!ILAC!'-T-, T,]-.

SELIVANOVA, a.A.
Prevention of epidermophy-tosis in certain industries at Kazan.
Kaz. med. zhur. no.4:88-91 Jl-Ag 161. (MIRA -15:2)
1. Kafedra kozhnykh i venericheskikh bolezney (zav. - prof. N.N.
Yasnitskiy) Kazanskogo meditsinskogo Instituta.
(KAW.-DERI-M TOMYCOSIS)

SELIVAN07A, R. G.
SELIV.010VA, R. G.: "A psychological analysis of the development of
frieddship among adolescent schoolchil-ren." Moscow GiV Peda-
oical Inst imeni V. P. Potemkin. Moscow, 1956.
Dissertation for Degree of Candidate in Pe-lagogical Sciences).
~
SO: Knizhnaya letopi3l., No 23, 1956

SUBJECT USSR/MATHEMATICS/The,~oc,y of a Pproxi mat ions CARD 112 PG - 147
AUTHOR SELIVANOVA. S.G.
TITLE k~yzptotic estimationq- of' Ifte appr~txlmatlons of differentiable
nonperiodic functions ty 6;)byyer sums.
PERIODICAL Doklady Akad. Nauk I I-
reviewed '7/1956 0,4, 6A8-'51 (1955)
Let W( r)k be the nlass of those f(i) whigh are defined on E-1,+13and
t
which there possees a de-,,itat-ire %,' z--.+h crder f(r)(X) which satisfies the in-
fr) ) ac, I
equation k = cojas-,~. Let _`-r-hz_r U tf,x a P be
2 k k(x
the sum of the first n terms of the de~,ompositiori of f into a Aeries in terms
of ~ebygev palyromials, where P =o,,s IL arc cos x, ak= 2 (t).PL(t) dt
k(x)
It is sbown that for atbitrary r I t
I I - - I - - , )r
sup if (_x) U (f,x,l
tv-) - P1
,c W k
, C = consi. Let W ;k be the class of those functions
where Or/nf
n,rl 0
f (x) whi eh are def:i.nr-,1 -% uF-1.+11 anLd fh'fi r-tt- derivatives of which there
satisfy the inequatton

Doklady Akad. Nauk 104, 649-651 CARD 2/2 PG - 14-1
t-II
P
2 P4,11 the asymptotic equation
Then !c.r r;,; w i I r t- p tt
(T .2 Of I
sup , . -,~ 1%
n r
fSW (r)k P. n n
p
is val-~d, vNre
:j
V cos -f t sln(t.
(r, t) e.-.vvr-I 2 2- dv -1 4.1
V, 9 + P q
Furthermore without proof fwo theorems or the estimation of the approximation
of the function f(i) which possesseq derivatives of bounded -variation are
formulated. All r~suits base essenti.:31ly on "he results of Nikolskij,
INSTITUTION: Lomorl-clasov Uni-versity Moac-)w.

SUBJECT IISSR/MLTHEMATICS/Fourier series CARD 1/1 PG - 194
AUTHOR =1VA1T]OVA S.G.
TITLE Me appro:xf-m-aflon by Fourier sums of functions the derivative of
which ~atjqfies the Lipschitz condition.
PERIODICAL Doklady Akad. Nauk 10L 909-912 (1955)
reviewed 8/1956
In 1945 Iiikoll gkij has proved the followiAg theoremi For arbitrary numbers r
and C4 (r ~~O t 0 4.o( -,< 1the f ollowing aoymptotio%equation is valids
2 K jW n. vot sin v dy +8
sup lf(x) 8n -7- r+ at n,r
f 0-w
where E 11,r ),is independent of X. Here Snis thd'~si~Lz of the first n
termas of the )'ourier series for f and v is the class of the ?V-perioclic functions,
which posaee.a a derivative of r-th order in the sense of Wayl which satisfies
the Lipsohitz condition with the power ot and the constant X.
In the present paper it is shown that is 4 Cr where C is an absolute
constant. n,r r+rjL
INSTITUT;ONt Lomonoosov University Moscow.

SELIVANOVA, S.G.,Cand Phys-Math Sci -- (diss) "Certain evalu-
ations of the approximation of functions by -4MI* Chebyshev sums
and VO IM Fourier sums 11 Mos, 1957, 5 pp (Mos Order of Lenin
and Order, of Labor, Red Banner State Univ Im M.V.Lomonosov),
100 copies (KL, 1-,E51% llLi)
- 5

OGLODKOV, V.A.; SELIVANOVA, S.L.
Device for operation with hygroscopic and air-unstable substances.
Zav.lab. 29 no.4:510 163. (MIRA 16:5)
1. Institut obahchey i neorganichoskay khimii AN L5-.rSSR.
(Chemical apparatus)

SELIVANOITA, S. IT., ZHUKOTISKIY. A. V.
Windbreal-s, Shelterbelts, etc. Irrigation. Wheat - Diseases and PeStB.
Effect of Irripation, shelterbelts and forage -rasses on sprinp-, wheat nests.
Dol-J. Ak. sel'khoz. 17 no. 3, 1952. Voronezhakaya Stantsiya Zashchity Rasteniy.
Red. la Jan. 1952
Monthly List pf Rugsian Acgesgion-j, Library of Congress, Aw-ust 1952. Unclassified.

SELIVANOVA, S.N., kandidat Be1'skokhozyayBtvennjykh nauk.
- - ------ -~-
Practical evaluation of the effectiveness of meastires for control-
ling eurygasters. Dokl.A3rad.sel'khoz. 21 no-5:27-.31 '56.
.(MLRA 9:8)
1. Voronezhakaya stantsiya zashchity rasteniy. Predstevlena
sektsiyey zashchity rasteniy Vsesoyuznoy ordena Tionina akademii
9e1'9kokhozyay9tvennykh nauk imeni V.I. Lenina.
(Burygasters) (Wheat--Diseases and pests)

, _jqVA S.N.
- "iAw;)Ww
Seeding time an related to damage done to barley and spring
wheat by Oacinella pusilla Haig. Agrobiologila no.4:116-120
Jl-Ag 158. (HIR& 11:9)
1. Voronezhskaya stantoiya zaehcbity rasteniy.
(Grain-Diseasea and posts) (Frit flies)

RATDiSHVILI, I.D.; BEY-BIYAK0, G.Ya.; BOGDAIIOV-KAT'KOV, U.N.; GSRASIMOV,
B.A.; GILTAROV, M.S.; DMITRIM, G.V.; Z7HHXZOK3-ZW1OVSKIY, Ye.Y.;
ZDfJN, L.S.; KOIDBOVA, A.N.; MEDVZW, S.I.; RISHCHIMKO, A.I.;
PETROV, A.I.; RYABOY, K.A.; SAVZDARG,
SKORIKOVA, O.A.; TROPKINA, M.F.; SHAPOSHNIKOV, G.Kh.; SHCHEGOLET,
V.11., prof., doktor sellskokhoz.nauk; ESTERBMG, L.K.; TAKHOUTOY,
V.V.; RLVT;SXAYA, Me., red.: CHUNAUVA, Z-V-o tekhn.red.
[ClnBsification of insects on the basis of damage to crops] Opre-
delitell nasekomykh po povrezhdeniiam kullturnykh rastenii. lzd.4.
perer. i dop. Leningrad, Gos.izd-vo sellkhoz.lit-ry, 1960. 607 P.
(MIRA 14:1)
(Insects, Injurious and beneficial)

SELIVANOVA, S,N., starshiy nauchnyy sotrudnik
Detecting pea weevils. Zashch. rast. at vred. i bol. 9 no.12t
31-32 #64. (MIRA 18:4)
1. Voronezhskaya stantsiya Vsesovuznogo instituta zafjhchity
ras te niy.

KOMSHILOV, N.F.-; PILYUGINA. L.G.~--~ ~IVA~ "V,, T-A.
Organi-c acids of black liquors from the sulfate woodpulp production.
Zhur.prikl.khim. 38 no.6~-1337-1339 Je 165.
(MIRA 18z10)
1,, Karellskiy institut lesa.

SMFIA11110VA, T. A.
l,bskva sotsialisticheskaia; pod red. I.A. Grakina, V.P. Pronina i T.A. SELIVANOVAL.
-1 0: DK601.R6
(Ilosl-va), I-loskovskii ra~7ochili, 194C. 116, (4) P. M
SO: LCI Soviet Geography, Part II, 1951/Unclassified

KOMSHILOV, N.F~; SELIVANOVA, T.A.
Determining the resinous substances content of black liquors in
sulfite pulp production. Buit.prom. 38 no.4:16-18 Ap 163.
(MIRA 16:5)
1. Laboratoriya. lesokhimii Karellskogo filiala, AN SSSR.
(Woodpulp industry-By-products)

XOMSHILOV, N.F.; P11AUGINA, L.G.; LETOMEAKI, M.N.; SELIVAIII ,OVA, T.. A.
Volatile ac.ld,-j from black Liquars of --he su-'"Ifate !3e'!'.Ilc--e
productIon. Ihur.prikl. 38 no,3:65CL-6.17 165,
(MRA 18., 11)
1. Karellskiy filial AN SSSR, institut lesa. Submit,ted Febr. 12,
1963,