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MIL-A-3850
24 DECEMBER 1952
SUPERSEDING
PXS-1281
3 AUGUST 1948
MILITARY SPECIFICATION
ACETYLENE BLACK
This specification has been approved by the Depart-
ments of the Army, the Navy, and the Air Force.
1. SCOPE
3. REQUIREMENTS.
1.1 This specification covers one grade of
3.1 Material. ­ The acetylene black shall be
acetylene black.
manufactured by the incomplete combustion
of acetylene by any suitable method which
will produce material conforming to the re-
2. APPLICABLE SPECIFICATIONS,
quirements of this specification.
STANDARDS, DRAWINGS, AND PUBLI-
CATIONS
3.2 Chemical and physical requirements. --
2.1 The following specifications and stand-
The acetylene black shall conform to the
ard, of the issue in effect on date of invita-
chemical and physical requirements shown
tion for bids, form a part of this specification:
in table I, when tested in accordance with
the applicable test method specified in sec-
SPECIFICATIONS
tion 4.
FEDERAL
TABLE I. --Chemical and physical require-
RR-S-366
--Sieves; Standard, Test-
ments of the acetylene black.
ing.
Test
Require-
method
MILITARY
ment
paragraph
Property
MIL-G-2550 --General Specification for
Moisture content, percent,
Ammunition Except Small Arms Am-
4.4.1
maximum - - - - - - - - - - - - - - - 0.50
munition.
Sulfur content, percent,
4.4.2
maximum - - - - - - - - - - - - - - - 0.05
NAVY DEPARTMENT
matter,
Ether-extractable
4.4.8
percent, maximum - - - - - - - 0.50
General Specifications for Inspection of
Volatile matter, percent,
Material.
4.4.4
maximum - - - - - - - - - - - - - - 2.0
Water-soluble matter, per-
4.4.5
cent, maximum - - - - - - - - - - 0.10
STANDARDS
4.4.6
Ash, percent, maximum - - - - 0.10
pH of water extract - - - - - - - 6.0 ± 1.0
4.4.7
MILITARY
4.4.8
Apparent density, g/cc. - - - -
0.08 ± 0.03
Coarse particles:
MIL­STD­129--Marking of Shipments.
R e t a i n e d on No. 325
sieve  1, percent, maxi-
4.4.9
mum - - - - - - - - - - - - - - - 0.10
(Copies of specifications, standards, and drawings
4.4.10
required by contractors in connection with specific
Grit, percent, maximum - - - -  0.05
procurement functions should be obtained from the
1
The sieve shall conform to Specification RR-S-
procuring agency or as directed by the contracting
officer.)
366.

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