Sodium phosphate dibasic heptahydrate is a reagent with very high buffering capacity widely used in molecular biology, biochemistry and chromatography. Sodium phosphate dibasic is highly hygroscopic and water soluble.
Molecular Formula
Molecular Weight
CAS Number
Na2HPO4•7H2O
268.07
7782-85-6
Solubility
Easily soluble in cold water, hot water.
Solubility in water: 104 g/100 ml @ 40 deg. C
Reactivity
Loses 5 H2O @ 48 deg. C
Incompatible with magnesium, alkaloids, antipyrine, chloral hydrate, lead acetate, pyrogallol, resorcinol, strong mineral acids, strong organic acids.
