阻燃剂磷酸二氢铵（MAP）

White crystalline powder, NH₄H₂PO₄, CAS 7722-76-1, to HG/T4133-2010. It is the main raw material for dry-powder fire extinguishing agents, and blends with boric acid and sodium tungstate give effective flame retardancy on textiles; 25 kg bags.