White or pale yellow crystalline, easy to dissolve in water and ethanol, dissolved in its crystal water when heating, decomposed when heated to 600~650 degree celsius.
1、Mainly used as biology-chemical reagent and basic dyestuff.
2、It is organic synthesised catalyst with wide application, can also be used in pigment industry. Made into heavy liquid can be used to flotate mineral; Can be applied in precipitation and identification of alkaloid when used as biological reagent.
Silicotungstic acid can be used as catalyst for the production of ethyl acetate by reaction between acetic acid and ethene:
C2H4 + CH3COOH → CH3COOC2H5
It is also used as catalyst in the production of acetic acid by ethene:
C2H4 + O2 → CH3COOH
Silicotungstic acid can be produced by non-ethel method. Use APT as raw material, by transition, coordinating silicon, exchange and evaporation to obtain silicotungstic acid.
This method is applicable without environmental pollution, the finished product is of high quality.