casno:7320-34-5 properties: anhydrous tetra potassium phosphate is in white powder. relative density 2.3534 and melting point 1109°c; it is apt to absorb humidity in the open air to deliquescent; soluble in water but insoluble in ethanol, and at 25 ,its solubility in water is 187g/100g water; it can chelate with alkaline metals ions or heavy metal ions. uses : it mainly applied to electroplating without cyanate, industrial or household detergents; it can used as a buffering reagent as well as stabilizer for hydrogen peroxide; it can also be used as dispersion agent for ceramic, clay, latex and pigments etc.