Sodium phosphate monobasic CAS 7558-80-7

Product Description:

Sodium phosphate monobasic (CAS 7558-80-7), also known as monosodium phosphate (MSP) or sodium dihydrogen phosphate, is an inorganic compound with the chemical formula NaH₂PO₄. It is an odorless, white, granular or crystalline powder that is highly soluble in water. This compound is widely used as a buffering agent, pH regulator, sequestrant, and as a source of phosphate in various industrial, food, and pharmaceutical applications.

Product Properties:

Property Value
CAS Number 7558-80-7
Molecular Formula NaH₂PO₄ (anhydrous), NaH₂PO₄·H₂O (monohydrate), NaH₂PO₄·2H₂O (dihydrate)
Molecular Weight 119.98 g/mol (anhydrous)
Appearance White granular or crystalline powder
Solubility Highly soluble in water
pH (1% solution) Approximately 4.1 – 5.0
Forms Available Anhydrous, Monohydrate, Dihydrate
Synonyms Monosodium phosphate, MSP, Sodium dihydrogen phosphate, Sodium biphosphate

Product Usage:

Sodium phosphate monobasic serves diverse functions across multiple industries. In the food industry, it is used as an acidulant, emulsifier, and a leavening agent in baked goods. Pharmaceutical applications include its use as a buffering agent in solutions, an excipient in tablet formulations, and as a component in saline laxatives or enemas. Industrially, it’s utilized in water treatment to prevent scale formation, as a pH buffer in chemical processes, in metal cleaning and surface treatment, and in the production of other phosphate salts. It is also a common laboratory reagent for preparing buffer solutions.

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