potassium pyrophosphate GOOD QUALITY AND MORE COMPETITIVE PRICE ! potassium pyrophosphateFormula: K4P2O7MW: 330.35Quality: white powder or mass,specific gravity:2.534,M.P.:1109°C;Soluble in water,insoluble in ethanol and its aqueous solution is alkali .Solubility (25°C):187g/110g water;it has the same properties as other condensed phosphate.Usage: mainly used as complexing agent in cyanogens-free ...