Disodium hydrogen phosphate, anhydrous, white crystalline powder ACS

Supplier: MP Biomedicals

Synonyms: sec-Sodium phosphate, di-Sodium hydrogen orthophosphate, di-Sodium hydrogen phosphate anhydrous, Sodium hydrogen phosphate, Disodium phosphate, Sodium phosphate dibasic

02191440.1 02191440.5 0219144001 0219144005
ICNA02191440.1EA 35 GBP
ICNA02191440.1 ICNA02191440.5 ICNA0219144001 ICNA0219144005
Disodium hydrogen phosphate, anhydrous, white crystalline powder ACS
di-Sodium hydrogen phosphate

Sodium dibasic anhydrous is used as a sequestrant, emulsifier and buffer in foods, as mordant in dyeing for weighting silk, in tanning, in manufacturing of enamels, ceramics, detergents, boiler compounds; as fireproofing agent in soldering and brazing instead of borax; as reagent and buffer in analytical chemistry, cathartic.,laxative.


It a reagent with very high buffering capacity widely used in molecular biology, biochemistry and chromatography. Useful in conjunction with Sodium Phosphate, Monobasic in the preparation of biological buffers. Used in many applications including the purification of antibodies.


Soluble in water, but more soluble in hot water; insoluble in alcohol, ethanol.


Caution: Research Use Only (RUO).

Formula: Na₂HPO₄
MW: 141,96 g/mol
Storage Temperature: Ambient
MDL Number: MFCD00003496
CAS Number: 7558-79-4

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Specification Test Results

Assay ≥99.0%
pH (5% aq soln) 8,7 - 9,3
Insoluble Matter ≤0,01%
Loss on Drying (105 °C) ≤0,2%
Chloride (Cl) ≤0,002%
Sulphate (SO4) ≤0,005%
Heavy Metals ≤0,001%
pH ≤0,002%
pka Iron (Fe)

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