O-D-1380B, FEDERAL SPECIFICATION: DRY CHEMICAL, FIRE EXTINGUISHING, MULTIPURPOSE PHOSPHATE (07-AUG-1989) [NO S/S DOCUMENT]

O-D-1380B, FEDERAL SPECIFICATION: DRY CHEMICAL, FIRE EXTINGUISHING, MULTIPURPOSE PHOSPHATE (07-AUG-1989) [NO S/S DOCUMENT]., This specification covers one type of dry chemical fire extinguishing powder composed mainly of ammonium dihydrogen phosphate.