Ammonium tungstate hydrate is a chemical substance whose detailed properties are summarized below:
Basic information on Ammonium tungstate hydrate
English name: Ammonium Metatungstate
CAS No.: 12028-48-7
Molecular weight: 851.74400
Melting point: 100ºC (dec.)(lit.)
Physical and Chemical Properties of Ammonium Tungstate Hydrate
Appearance: white powder
Solubility: soluble in water, insoluble in alcohols
Properties of aqueous solution: aqueous solution is weakly acidic
Stability: stable at room temperature and pressure, but avoid light, open flame and high temperature.
Thermal stability: it will lose four molecules of water of crystallization when heated to 100℃, and it will decompose into tungsten oxide (WO3), ammonia and water when the temperature rises again.
Ammonium tungstate hydrate use
Preparation of tungsten catalyst
Widely used in petroleum hydrocracking, lubricant hydrotreating, desulfurization, denitrogenation and other processes.
Surface coating
Used for surface coating of various metal products, cemented carbide, etc.
Other applications
Also used in the production of lubricants, corrosion inhibitors, fertilizers, denitrification catalysts, fluorescent materials, electrode materials, photoelectric materials, superconducting materials, hydrogen storage materials and other chemicals.
Storage condition of ammonium tungstate hydrate
Closed at room temperature, cool and ventilated dry place.
Ammonium tungstate hydrate is a chemical substance with specific physicochemical properties and a wide range of uses, which has important applications in industrial catalysis, materials manufacturing and other fields.
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