... of dry powder The main composition of ammonium phosphate.Chemical In NH4H2PO4,(NH4)2HPO4, after being broken into pieces. ... fires of inflammable liquids and gases, and is widely used in oilfield, oil depot, ships, warehouses, refineries, transformer substation ... ,petrochemical companies, etc.The agent is classified in the content of ammonium phosphate, such as 50% base ...