Phosphotungstate Sodium

Phosphotungstic sodium is a white fine crystal and English alias is phosphowolframate. Its physical properties are as follows: chemical formula: Na3PO4.12WO3.xH2O, solubility: easily soluble in water, flammability: non-flammable, CAS registry number: 51312-42-6, UN registry number: 3086. Besides. phosohotungstate sodium has toxicity and oxidability, which is a strong oxidizing agent and oxidation will break down into phosphorus oxides and phosphine. And combustion will generate toxic sodium oxide and phosphorus oxide. Therefore it should be sealed and stored in a dry place and to avoid fire sources. On the other hand its has some irritation for people, but also have a certain impact on the environment and water bodies, and therefore the operating staff to be equipped with certain security measures, and not emission the material into water to cause pollution. Phosphorus tungstate is mainly used in the produce pigment and used as alkaloids, uric acid and potassium assay reagents.
Sodium phosphate tungsten producing methods are as follows:
1. Putting disodium hydrogen phosphate and sodium tungstate dissolved in water, then adding concentrated hydrochloric acid after crystalline to obtain it.
2. Using tungsten acid and sodium dihydrogen phosphate as raw material by hydrothermal to produce.

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