YELLOW RAIN-ANALYSIS EVALUATION OF LIQUID SAMPLE

• Document Type: FOIA
• Collection: FOIA Collection
• Document Number (FOIA) /ESDN (CREST): 00037487
• Release Decision: RIFPUB
• Original Classification: U
• Document Page Count: 2
• Document Creation Date: December 28, 2022
• Document Release Date: September 26, 2017
• Case Number: F-2012-01432
• Publication Date: August 3, 1984

Approved for Release: 2015/01/05 000037487
ANALYTICAL BRANCH
RESEARCH DIVISION
3 August 1984
Analysis/Evaluation of Li3uid Sample
A shipment designated 10027N(4) was received by the Analytical Branch,
13 December 1983, from FSTC. The shipment consisted of a square pint
glass bottle with a plastic screw top labeled T11831103-1XX containing a
green colored liquid with a piece of metal pipe in it, figure 1. Red-
brown vapors were in equilibrium with the liquid. The plastic lid and.
its paper liner were in a deteriorated condition when received.
No information was available about the sample. The general appearance
suggested it contained acid(s). The pH of the liquid was determined to be
less than 1, indicating a strong acid. Qualitative tests for chlorine
containing acids or salts and sulfur containing acids or salts were negative.
Qualitative tests for nitric acid were positive. Quantitative neutraliza-
tion of the acid indicated it was 12.3 N. It appears to have been used to
decon a metal part. The acid concentration would eliminate any possible
survival of any organic compounds.
Conclusion:
The sample consists of 12.3 N nitric acid which appeared to have been
used to decortaminate a piece of metal tubing. The acid concentration is
one commonly used industrially and similar to that of sample 10027RHHH
received 28 Sep 83.
Classified b : CIA
Declassify: OADR
Approved for Release: 2015/01/05 000037487 rArc)
Approved for Release: 2015/01/05 000037487
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