12-wolframophosphoric acid is an inorganic compound with the chemical formula H3PO4 · 12WO3 or H12P4W48O184. The following is a description of some of the properties, uses, methods, and safety information of 12-wolframophosphoric acid:
Nature:
1. 12-wolframophosphoric acid is a white crystalline solid, soluble in water.
2. It has high acidity and can react with alkali to generate salt.
3. 12-wolframophosphoric acid can be decomposed into WO3 and H3PO4 at high temperature.
Use:
1. As a catalyst, it can be used for esterification reaction, decomposition of ketone, partial oxidation reaction, etc.
2. Used in the production of colorless glass and ceramic materials.
3. Used as an etching and cleaning agent in the manufacturing process of electronic devices in the electronics industry.
4. For chemical analysis and laboratory reagents.
Preparation Method:
12-wolframophosphoric acid can be prepared by reacting phosphoric acid with tungsten hydroxide or tungstic acid. Phosphoric acid is first dissolved in water and then reacted with an excess of tungsten hydroxide or tungstic acid to give a precipitate of 12-wolframophosphoric acid. Finally, the precipitate is washed, filtered and dried.
Safety Information:
1. 12-wolframophosphoric acid is irritating to eyes and skin, please be careful to avoid contact.
2. Wear appropriate protective equipment such as laboratory gloves and goggles during operation.
3. Avoid inhaling 12-wolframospheric acid dust, and ensure a well-ventilated working environment.
4. In the storage and handling process to comply with the chemical safety procedures, to avoid adverse reactions with other chemicals.