Napalm
The M1 Thickener (Mil-t-589a), chemically a mixture of 25% wt. aluminum naphthenate, 25% aluminum oleate, and 50% aluminum laurate, (or, according to other sources, aluminium stearate soap) is a highly hygroscopic coarse tan-colored powder. As the water content lowers the quality of napalm, thickener from open containers should not be used later. It is not continued in the US Army inventory any more as it was replaced with M4.