Ammonium Paratungstate Solubility

What is the solubility of ammonium paratungstate? The more common question is - "Is ammonium paratungstate soluble in water?" or "Is APT soluble in water?"

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Solubility of Ammonium Paratungstate

1. APT is slightly soluble in water, and its solubility in water is less than 2% at 20 °C.

2. APT is insoluble in alcohol.

3. Heating APT to 220-280 °C, it loses part of the ammonia and crystal water, to be converted into ammonium metatungstate (AMT) - a water-soluble white or slightly yellow crystal powder.

4. Heating APT to above 600 °C, it loses all ammonia and crystal water, and is completely transformed into tungsten trioxide (WO3) - a light yellow or light green powder that is insoluble in water.

ChinaTungsten Online has been manufacturing and selling ammonium paratungstate for over 23 years. The APT we produce is very pure with low impurity levels. We can provide you with the highest quality APT products while maintaining controlling costs.

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