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| MIL-P-48239 (MU)
4.4.4.1.2 Magnesium. As much of the residue from
the potassium perchlorate determination remaining in
the crucible as practicable, shall be transferred to
a 150 ml beaker. One hundred (100) ml of five percent
acetic acid solution shall be added to the beaker and
the contents stirred occasionally until there is no
longer a visible reaction. Twenty (20) ml of five
percent acetic acid solution shall be added to the
crucible and the contents stirred occasionally until
there is no longer a visible reaction. The contents
of the beaker shall then be filtered using the same
filtering crucible mentioned above. The residue
in the beaker shall be transferred to the crucible
quantitatively and washed with five, 5 ml portions
of water and two, 5 ml portions of acetone. The
crucible and contents shall be dried for 30 minutes
at 100 plus or minus 5 degrees C., cooled in a desiccator
and weighed. The loss in weight shall be calculated
to percent magnesium in the sample on a dry basis.
4.4,4.1.3 Aluminum. The residue remaining in the
crucible, obtained in connection with the determination
of magnesium shall be calculated to percent aluminum
in the sample on a dry basis.
4.4.4.2 Type II, Class A
4.4.4.2.1 Potassium perchlorate. Use the same
procedure as specified in 4.4.4.1.1.
4.4. 4.2.2 Magnesium-aluminum alloy. Calculate
the weight of the undissolved residue in the cruible
remaining from the determination of the potassium
perchlorate as percent magnesium aluminum alloy in
the sample on a dry basis.
4.4.4.3 Type II, Class B
4.4.4.3.1 Barium nitrate. Use the same procedure
as specified in 4.4.4.1.1.
4.4.4.3.2 Magnesium-aluminum alloy. Use the same
procedure as specified in 4.4.4.2.2.
4.4.4.4 Type III, Class A and Class B
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