M4 flame fuel thickening compound is a nonhygroscopic thickener, a di-acid aluminum soap of isooctanoic acids derived from isooctyl alcohol or isooctyl aldehyde, which are obtained from the oxidization of petroleum.[1] M4 is used in fire bombs and incendiary weapons. It was developed alongside napalm and M3 (octal), and was their direct successor.[2]

See also
editReferences
edit- ↑ Department of the Army, Military Explosives Archived 2007-09-27 at the Wayback Machine, TM 9-1300-214, September 1984
- ↑ Data on Thickeners (U). CRL, Army Chemical Center, Maryland. 20 February 1952.