AMMONIUM (META)TUNGSTATE HYDRATE With CAS 12333-11-8

CAS: 12333-11-8

Molecular Formula: H2O.6H3N.H8O40W12

Molecular weight: 2974.3

EINECS No: 683-059-0

Synonyms: AMMONIUM METATUNGSTATE HYDRATE, >=66.5% W; AMMONIUM METATUNGSTATE HYDRATE, 99.99%; AMMoniuM Metatungstate hydrate >=85% WO3 basis (graviMetric); Ammonium metatungstate hydrate 99.99% trace metals basis

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What is AMMONIUM (META)TUNGSTATE HYDRATE ?

Ammonium metatungstate (AMT) is one of the precursors of tungsten carbide (WC) catalyst. The surface morphology and particle size distribution of WC particles are affected by the properties of its precursors, and ultimately affect its catalytic activity

Specification

Item	Standard
WO₃	88-91%
Ca	≤0.002%
Cu	≤0.001%
Fe	≤0.001%
K	≤0.015%
Mg	≤0.001%
AI	≤0.001%
Mo	≤0.006%
Pb	≤0.001%
Si	≤0.003%

Application

It can be used as a preservative in food and can supplement zinc needed by human body. The dosage can refer to sodium benzoate, and its effect is better than that of sodium benzoateAmmonium tungsten oxide hydrate is widely utilized as a raw material for the synthesis of tungsten catalysts, which is used in a variety of reactions like oxidation, hydroxylation, hydrogenation and polymerization.