Hexaammonium molybdate(AHM) and Ammonium Heptamolybdate Hexaammonium Heptamolybdate Tetrahydrate Ammonium molybdate,4-hydrate or Ammonium Paramolybdate Molecular Formula: (NH4)6Mo7O24.4H2O CAS: 12027-67-7 12054-85-2 EINECS: 234-722-4 Molecular Weight: 1235.86 Physical Properties: white crystalline powder Relative density 2.498g/cm3 Soluble in water, ammonia, insoluble in alcohol; Lost a crystallization water when heated to 90C, 190C when broken down into ammonia, water, and molybdenum oxide. Placed in the air of weathering, lost part of ammonia Application: Used in oil Cobalt, molybdenum catalyst, chemical paint and trace fertilizer, also used for metal surface treatment agent, corrosion inhibitor, used in the production of catalysts and Molybdenum products. It can also be used in fertilizer added molybdenum elements.