THE RATE OF FORMATION OF TETRAFLUOROBORIC ACID IN MIXTURE OF HYDROFLUORIC AND BORIC ACIDS, I AND II

• Document Type: CREST
• Collection: General CIA Records
• Document Number (FOIA) /ESDN (CREST): CIA-RDP80-00809A000600270564-6
• Release Decision: RIPPUB
• Original Classification: C
• Document Page Count: 2
• Document Creation Date: December 22, 2016
• Document Release Date: September 15, 2011
• Sequence Number: 564
• Publication Date: December 22, 1949
• Content Type: REPORT

Sanitized Copy Approved for Release 2011/09/19: CIA-RDP80-00809A000600270564-6
',LASSIFICATION CoNFIMrIA-l . L.
CENTRAL INTELLIGENCE AGENCY REPOP,
INFORMATION FROM
FORE'GN DOCUMENTS OR RADIO BROADCASTS CD NO.
COUNTRY USSR
SUBJECT Chemistry
HOW
DATE
PUBLISHED oct 1949
LANGUAGE Russian
PUBLISHED Moecow/Leningrad
WHERE
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THIS IS UNEVALUATED INFORMATION
IN MIxrUM OF HYIISC@ILIICISIC AND BORIC ACIDS, I and II
I. by I. G. Ryes and M. M. Slutekaya; II. by Ryee, both of Dnepropetrovsk
Metallurgical Institute, Laboratory of General Chemistry
The rate of formation of BBF4 at 300 C in mixtures of hydrofluoric and
boric acids was determined for initial concentrations of BF of from 0.268 M
to 0.0394 M and ratios of HF/H3B03 of from 8 to 2. Slight increases in the
rate of the reaction were noted when the ratio of Br/113B03 was increased,
and an abrupt increase was caused by an increase in the concentration of the
solution.
The formal order of the reaction was calculated as close to 2.7-3.
In 20% BF iis reaction was completed in 2-3 minutes.
Temperature increases sharply Increased the rate of the reaction, but
also brought about lower yields. Submitted July 5, 1948.
BIBLIOGRAPEY
1. R. Abegg, C. Fox, and W. Herz, Z. allg. anorg. ch., Vol ffiV, p 129 (1903)
2. A. Travers and L. Malaprade, Bull, Soc. Chien., Vol. BLVII, p 788 (1930)
3. I. G. Byes and M. M. Slutekaya, DAN, Vol LVII, p 689 (1947)
Experimental data on the rate of formation of tetrafluoroboric acid
contradicted the hypothesis of the spontaneous formation of BF'4 and con-
curred with the following descriptidn: Following the instantaneous formation
of strong hydrgyyfiuorobic acid, there occurs a slow bimolecular inteact'on
of the undieecciated portion of the BF3H2O molecules with the EF molecules.
CLASSIFICATION
VV NO
Sanitized Copy Approved for Release 2011/09/19: CIA-RDP80-00809A000600270564-6
 Sanitized Copy Approved for Release 2011/09/19: CIA-RDP80-00809A000600270564-6
CONFILF1MAL
The relation between the constant of the rate of the reaction and the
in measuring I., hoat of solution of boric acid Vi hydroflunricacid~as well
as their measurements of the electxnc_on,ductivity of t:7
'a mixtures.
For mixtures with Fii''/H 303