The general chemical formula of sodium phosphotungstate is Na3O40PW12 xH2O. It is an inorganic compound obtained by dissolving sodium tungstate and disodium hydrogen phosphate in water, adding concentrated hydrochloric acid and concentrating to crystallize. It is composed of tungsten, phosphorus, oxygen A white powder with a purity of up to 99% composed of four elements of sodium and sodium, the English name is Sodium Phosphotungstate or Sodium Phosphowolframat, the common chemical formula is Na3O40PW12, the molecular weight is 2946, the CAS number is 51312-42-6, and the EINECS number is 234-716-1 .
Sodium phosphotungstate is white fine crystal, weathering in the air. Very soluble in water. Sodium phosphotungstate is mainly used to make pigments, and also used as analytical reagents. Sodium phosphotungstate is obtained by co-dissolving sodium tungstate and disodium hydrogen phosphate in water, adding concentrated hydrochloric acid and evaporating to crystallize.
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