What Are Detailed Data of Ammonium Metatungstate?

The detailed data of Ammonium Metatungstate (AMT) are as follows:

Chemical formula: (NH4)6H2W12O40

Molar mass: 2978.35 g/mol

Appearance: white crystalline powder or amorphous solid

Solubility: Soluble in water and some organic solvents (such as alcohols and ketones)

Melting point: approx. 250-300 °C

Density: 2.8-3.0 g/cm³

Acidity and alkalinity of aqueous solution: acidic solution

Thermal stability: stable at high temperature and can withstand certain heat treatment conditions

Solubility: soluble in water, solubility increases with temperature

Acid hydrolysis reaction: react with acid to form tungstate

Thermal decomposition: decomposes into tungsten oxide and ammonia under high temperature conditions

Toxicity: It is a low-toxic substance, but still need to pay attention to proper safety operation and protective measures

Acidity: Acidic solution

Application: Used to prepare other tungsten compounds, catalysts, electrochemical materials, optical materials, etc.

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