Sodium Phosphate, Dibasic
Disodium Monohydrogen
Phosphate;
Disodium Phosphate Na2HPO4 Molecular Weight : (anhydrous) 141.96
Na2HPO4·2H2O Molecular Weight : (dihydrate) 177.99
INS: 339(ii)
CAS: Anhydrous [7558-79-4]
CAS: Dihydrate [10028-24-7]
CAS: Dodecahydrate [10039-32-4]
DESCRIPTION
Sodium Phosphate, Dibasic, occurs as a white, crystalline powder or as granules. It may be anhydrous or contain two molecules of water of hydration. The anhydrous form is hygroscopic.
Both forms are freely soluble in water and insoluble in alcohol.
Function
emulsifier; texturizer; buffer; nutrient.
REQUIREMENTS
Identification A 1:20 aqueous solution gives positive tests for Phosphate and for Sodium, Appendix IIIA.
Assay Not less than 98.0% of Na2HPO4 after drying.
Arsenic Not more than 3 mg/kg.
Fluoride Not more than 0.005%.
Insoluble Substances Not more than 0.2%.
Lead Not more than 4 mg/kg.
Loss on Drying Anhydrous: Not more than 5.0%; Dihydrate: Between 18.0% and 22.0%.
Packaging and Storage Store in tightly closed containers.
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Product Categories : Phosphate > Sodium Phosphate
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