O-T-620C
INTERIM AMENDMENT-3
June 6, 1977
SUPERSEDING
interim
Amendment-2
December 28, 1970
INTERIM AMENDMENT
m
FEDERAL SPECIFICATION
1,1,1-’I’RICHLOROETI[ANK,TECllNICAL, INIiIBITED
(METHYL CHLOROFORM)
This iterim amendment was developed by the General Services
Administration, Federal Supply Service, Washington, DC
20406,
based upon currently available technical information.
It is
recommended that Federal agencies use it in procurement and
forward recommendations for changes to the preparing activity
at the address shown above.
The General Services Administration has authorized the use of
this interim amendment as a valid exception to Federal
specification O-T-620C, dated September 13, 1967.
Parayraph
(Halogenated
l’aragriiph
2.1,
line 5,
Hydrocarbons
3.4.2, lines
PAGE 1
delete:
“BD-C-31O - Chlorofluoro Hydrocarbons
,,
.
2 and 3, delete:
“chlorofluoro hydrocarbons of the
--- ..
methane and ct.bane series conformlnq to BB-C-31O, o“re~uivalcnt.”
4,
Lines 3 and
delete:
“The propellant shall be not less than 32 percent by weiyht of the
finish product,” and substitute
“It shall contain no vinyl chloride or fluoro-
earl.xm~sno. 11, 12, 114, or 115 when tested as specified In 4.5.13.”
PAGE 7
At the end of section 4, add the following:
4.5.13 Analysis of
propellant
----
gas for fluorocarbons and vinyl chloride.
4.5.13.1
Special apparatus and materials.
— ——
(a) A can-piercing, [)ressure-measurinq device recommended in CSMA Aerosol
Guide for determining the internal pressure of
aerosol products.
The device is
available as
Model CBA-6 from Builders Sheet Netal Works, Inc., 110 Wooster
Street, New York, NY 10012.
(b) A temperature proqramrnable qas chromatoqraph (Hewlett-Packard Model
S750, or equivalent) equipped with a 0.5 ml qas sampling valve and thermal
conductivity detector.
(c)
TWO stainless steel gas chromatography columns, 6 feet long by l/8n
out$ide diameter, packed with 60-200 mesh silica qel.
(d)
Standard propellant
yascs in lecture bottles from Math+on Gas
Prpducts (or another supplier) :
vinyl chloride,
fluorocarbons no. 11, 12, 114,
115.
(e)
Matheson lecture bottle control valve Model 58, or equivalent.
FSC 6810, 7510
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