White powder or crystals. Colorless or white crystalline powder. soluble in water,
Solubility in water, its aqueous solution is alkaline; insoluble in alcohol. boiling the hydrolysis
As disodium hydrogen phosphate. In dry air weathering, lose crystal water . In the air easily absorb moisture and deliquescence. With an alkaline earth metal ion
Can form a complex; and Ag + is generated when white pyrophosphate silver met.