The thermal decomposition process of ammonium metatungstate (AMT) is a complex, multi-stage reaction involving the removal of crystal water, structural phase transitions, and the eventual formation of tungsten oxide. Specifically, the thermal decomposition of AMT can be pided into the following stages:

Ammonium metatungstate (AMT) is a highly water-soluble tungstate compound, widely used in tungsten chemical industries and catalyst preparation due to its high solubility in water (approximately 300-330 g/100 mL at 25°C). However, its solubility in organic solvents is significantly different, typically much lower or nearly insoluble. Below is an overview of AMT's solubility in some common organic solvents:

The wire cut molybdenum wire is a molybdenum product mainly made of refractory metal molybdenum (Mo). It is a thin wire made by forging and drawing molybdenum bars, and serves as a cutting wire for wire cutting machines. Its English name is "wire cut molybdenum wire", and its diameter generally ranges from 0.12 to 0.20 mm.

Ammonium metatungstate (AMT), besides being soluble in dilute acid solutions such as dilute hydrochloric acid, dilute nitric acid, and acetic acid, can also dissolve in alkaline solutions like ammonia water.