Silicotungstic Acid

Silicotungstic acid also known as dodeca-tungstosilicic acid tungstosilicic is white or yellowish deliquescent crystals. Its physical properties are shown below: chemical formula: H4O40SiW12, molecular weight: 2878.17, Solubility: 0.1g/ml (in water), CAS registry No.: 12027-38-2. Silicotungstic acid easily solute in water and alcohol, after dissolved the the solution is clear and transparent, but when it heat will dissolve in its crystal water and heated to 600~650℃ will decomposition. H4O40SiW12 mainly used in biochemical reagents and basic dye mordant. To seal and placed in dry place when storage and transportation.
Silicotungstic acid producing processes are as follow: using ammonium paratungstate as raw material, after conversion, mix silicon, exchange, evaporation and concentrated and other processes to obtain products, thereby preparing silicon tungstate. This producing method processes are reasonable and products have good quality, what’s more, it is kind of non-polluting method. It will be a new road for non-ether produced silicotungstic acid and silicon tungstate.

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