The English abbreviation of ammonium metatungstate is AMT, which is a white or slightly yellow crystalline powder. It is very soluble in water, and its solubility in water increases with the increase of temperature. It is insoluble in alcohol.
Preparation method: Heat and thermally dissociate ammonium paratungstate to make it lose part of ammonium and crystal water to obtain ammonium metatungstate.
Ammonium metatungstate is often used in the preparation of metal tungsten, high-efficiency tungsten catalysts in petrochemicals, nuclear shielding materials, etc. It is also used in the ceramic industry, alloy steel, fireproof fabrics and corrosion inhibitors.
