What is Ammonium Tungstate Hydrate?

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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