Disodium hydrogen phosphate heptahydrate

Disodium hydrogen phosphate heptahydrate (CAS 7782-85-6), also sold as sodium phosphate dibasic heptahydrate, is an inorganic phosphate salt used in food, pharmaceutical, and industrial sectors.

Where is Disodium hydrogen phosphate heptahydrate used?

• Water treatment: controls scale formation and sequesters metal ions to protect boiler and cooling systems
• Food and beverage: stabilizes emulsions, regulates acidity, improves texture in processed products
• Pharmaceutical: prepares buffered solutions
• Textile and paper processing: sequestrant preventing metal ion interference during dyeing and bleaching
• It functions as a pH buffer, sequestrant, and dispersing agent in aqueous systems.

Good to know: Maintains pH stability in injectable and topical preparations.

Commercial specifications

• Food-grade (FCC)
• Pharmaceutical-grade (USP, BP, Ph. Eur.)
• Bulk quantities standard for industrial buyers; smaller packaging for pharmaceutical and laboratory use