White powder , easily dissolve in water , not dissolve in ethanol Molecular formula:Na4P2O7Molecular weight:265.90Properties:White powder , easily dissolve in water , not dissolve in ethanol , relative density is 2.45, melting point is 890°C, liquid is alkalescence , 1% , PH: 9.9-10.7.Quality index:Uses:2,Used in foods as emulsifier, nutrition agent , quality modifier ,etc.