MIL-DTL-450 Coating Compound, Bituminous Solvent Type, Black \(For Ammunition\)This specification covers an asphalt compound for coating the surfaces of ammunition cavities prior to filling with explosives. It provides for an additional composition of material suitable for use in areas with specific air pollution regulations \(see 6.1 and 6.4\).

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MIL-DTL-450D

4.4.7.3 Method.

a. Weigh accurately about 2 g of the sample into a 150-mL beaker.

b. Evaporate the volatile solvent on a steam bath.

c. Add 50 mL of carbon disulfide and agitate until solids are broken up and all lumps

disappear.

d. Cover and set aside for 15 minutes.

e. Filter through a tared Gooch crucible.

f. Wash down the sides of the beaker and the Gooch crucible with a small portion of carbon

disulfide until the filtrate is clear.

g. Draw air through the Gooch crucible for about 10 minutes to remove the carbon disulfide.

h. Dry the crucible and contents for about 20 minutes in an oven at 105 to 110 �C.

i. Cool and weigh.

4.4.7.4 Calculation of test results. Calculate the percentage of matter insoluble in carbon

disulfide as follows:

Where:

A = weight of residue (g)

W = weight of sample (g).

4.4.8 Acidity or alkalinity.

4.4.8.1 Equipment.

a. Scale

b. 150-mL flask

c. Stopper

d. 250-mL flask

e. Water bath