Ammonium Paratungstate (APT, chemical formula: (NH4)6[H2W12O40]⋅xH2O) is soluble in hydrogen peroxide (H2O2) and undergoes a chemical reaction during the dissolution process, forming soluble peroxotungstate complexes.
Reaction Mechanism: APT reacts with hydrogen peroxide to form peroxotungstate complexes with characteristic colors.
Characteristic Behavior:
- Color Change: After dissolution, the solution usually turns yellow, indicating the formation of peroxotungstate.
- Solubility: The higher the concentration of hydrogen peroxide, the greater the solubility of APT, and the more complete the reaction.
- Applications: Used in the preparation of tungstate or tungstate salt materials, tungsten analysis, and as a precursor for nanometer tungsten materials.
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