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Sodium Dihydrogen Phosphate

English name: Sodium dihydrogen phosphate
English alias: Sodium phosphate monobasic dihydrate, Acid sodium phosphate, Monosodium orthophosphate, Primary sodium phosphate, Sodium dihydrogen phosphate, Sodium biphosphate,
Monosodium phosphate, MSP
CAS Number: 7558-80-7
Chemical formula and relative molecular mass: NaH2PO4: 119.98 g/mol
Type:Feed Grade
Advantage :Bulk stock in USA warehouse,Hot sale in USA Marketing;

What is Sodium dihydrogen phosphate?

Monosodium phosphate (MSP), also known as monobasic sodium phosphate and sodium dihydrogen phosphate, is an inorganic compound of sodium with a dihydrogen phosphate (H2PO4−) anion. One of many sodium phosphates, it is a common industrial chemical. The salt exists in an anhydrous form, as well as mono- and dihydrates.

Sodium phosphate creates large fluid shifts in individuals and has demonstrated electrolyte changes including transient hyperphosphatemia and potential hypocalcemia.



Name of index


E 339 (i)


White odourless, slightly deliquescent powder, crystals or granules

Assay( as dry base)



≥97.(60℃ 1h then 105℃ 4h)

P2O5 Content(Anhydrous basis)




Pass test

Pass test

Solubility tests

Freely soluble in water.

Insoluble in ethanol or ether

PH( 1% Aqueous solution)






10(expressed as fluorine)

Loss on drying,


1.≤2.0 (Anhydrous)



1.≤2.0 (Anhydrous)



(60℃ 1h then 105℃ 4h)





Water insolubles


0.2 0.2(Anhydrous basis)













It is added in animal feed, toothpaste, and evaporated milk. It is used as a thickening agent and emulsifier. Sodium dihydrogen phosphate is used as feed additive.


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