Ammonium metatungstate hydrate is a chemical substance whose details and characteristics are listed below:
Basic information of Ammonium metatungstate hydrate
CAS No.: 12333-11-8
Molecular formula: (NH4)6H2W12O40-xH2O
Appearance: white crystalline powder or slightly yellow
Properties: soluble in water and weakly acidic
Ammonium metatungstate hydrate use
Ammonium metatungstate hydrate has important applications in many fields, including the manufacture of tungsten metal, alloy steel, fireproof fabrics, etc. and is widely used in the ceramic industry.
Ammonium metatungstate hydrate is also the main raw material for tungsten-based catalysts in oil refineries, and is used in the manufacture of various petrochemical catalysts and other tungsten compounds.
Ammonium metatungstate is also used as raw material for catalysts, capacitors, nuclear shielding, flame retardants, corrosion inhibitors, and excellent raw material for making ultrafine tungsten powder, high specific gravity alloy tungsten powder, phosphotungstic acid, arsenotungstic acid, and silicotungstic acid.
Production process of ammonium metatungstate hydrate
The production process of ammonium metatungstate hydrate includes various methods, such as solvent extraction method, ion exchange method, neutralization method, tungstic acid method and thermal decomposition method. The core of these methods lies in the conversion of ammonium tungstate or sodium tungstate into ammonium metatungstate by controlling the reaction conditions, such as pH value, temperature, stirring speed, etc.
Health and Environmental Impact of Ammonium Metatungstate Hydrate
Ammonium metatungstate hydrate has certain health hazards, such as it may be harmful to health if swallowed, it may be detrimental to health in contact with skin, and it may cause serious visual impairment.
It is also harmful to aquatic organisms, so special attention needs to be paid to environmental protection when using and storing it.
Storage and transportation of ammonium metatungstate hydrate
Ammonium metatungstate hydrate should be stored in a dry, cool and ventilated place, avoiding direct sunlight and humid environment.
During transportation, tightly sealed containers should be used and avoid violent vibration, impact or fall.
Safety Information of Ammonium Metatungstate Hydrate
Ammonium metatungstate hydrate is classified as hazardous material and relevant safety operation procedures and regulatory requirements should be observed.
Appropriate protective equipment, such as protective gloves, protective clothing, eye protection equipment and protective masks, should be worn during handling and use.
To sum up, ammonium metatungstate hydrate is an important chemical substance with wide application in many fields, but it needs to pay special attention to its health and environmental impacts and comply with relevant safety regulations during use, storage and transportation.
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