White powder.It easily absorps moisture and deliquesces, easily soluble in water and insoluble in ethanol. 1,Chemical Name: POTASSIUM PYROPHOSPHATE2, ... Molecular Formula : K4P2O73,Molecular Weight: 330.344,CAS: 7320-34-55,Character: White powder. The relative ... ≤%0.0003PH Value10.5±0.5OrthophosphateUp to Standard potassium pyrophosphate-food additives