【Chinese name】Phosphotungstic acid
【English name】phosphotungstic acid;PTA;phosphowolframic acid;heavy acid
【Structure or molecular formula】
【Appearance】White or yellowish green crystal.
【Usage】Biological chemical reagent or pigment.
【Preparation】Adding phosphoric acid and hydrochloric acid to phosphotungstate solution, extraction by aether.
【Others】Easy slaking. Stable in acid solution, decomposing to phosphate and phosphotungstate azeotropic with alkali. Water content between 9~17, becoming tungsten trioxide when heating and losing the water.
