MIL-DTL-24441D(SH)
3.4.1 Use of alternate ("or equal") ingredients. Specification sheets allow manufacturers to use alternate
("or equal") ingredients for named ingredients. When ingredients not listed on the individual specification sheets are
proposed for use, manufactures shall conduct complete qualification tests.
3.4.2 Hazardous solvents. When tested as specified in 4.5.20, the content of hazardous air pollutant solvents
(HAPs) in the each individual liquid coating shall not exceed the percent by weight (wt%) values specified in table I.
Within these limitations and the requirement that the finished coating meet all requirements of this specification,
coating system solvent selection shall be in accordance with the individual specification sheets.
TABLE I. HAP solvent content limits of coatings using alternate solvents.
Hazardous solvent in each individual total paint
Maximum, wt%
Benzene
0.05
Chlorine or fluorine containing solvents, total
0.05
Class I or Class II ozone-depleting chemicals as defined in 40 CFR 82.
0.01
Ethyl benzene
0.05
Methyl, ethyl, and butyl mono-ethers of ethylene glycol or the acetates
0.05
thereof, total (methyl, ethyl, and butyl cellosolves, and methyl, ethyl, and
butyl cellosolve acetates)
Methyl ethyl ketone (MEK)
0.05
Methyl isobutyl ketone (MIBK)
0.05
Toluene
0.05
Xylene (all forms), total
0.1
3.4.3 Hazardous pigments and additives. When tested as specified in 4.5.21, the content of each soluble metal
and the total content of each metal in the coating shall be less than the values specified in table II. In addition,
asbestos and asbestos form pigments shall not exceed 0.5 weight per cent of the dry paint film (see 4.5.21).
Crystalline silica shall not exceed 100 milligrams per liter (mg/L).
TABLE II. Metals content for coatings using alternate pigments.
Soluble metal and its compound in
Soluble content,
Total content,
each individual dry paint
maximum, mg/L
maximum, wt%
Antimony
15
0.015
Arsenic
5
0.005
Barium (excluding barite)
100
0.10
Beryllium
0.75
0.0002
Cadmium
1
0.0005
Chromium (VI)
1
0.001
Chromium and chromium (III)
560
0.56
Cobalt
50
0.005
5
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