Disodium Phosphate Anhydrous (DSP) — Pharma & Food Grade Supplier, Hyderabad
Product Overview
Disodium Phosphate Anhydrous (DSP) is an inorganic sodium salt of phosphoric acid used as a buffering agent, pH adjuster, sequestrant, and emulsifying salt in pharmaceutical, food, and industrial applications. It is highly soluble in water and provides an alkaline pH in solution, used widely in injectable formulation buffers.
Specifications
| CAS Number | 7558-79-4 |
| Molecular Formula | Naâ‚‚HPOâ‚„ |
| Appearance | White hygroscopic powder |
| Assay | NLT 98.0% |
| pH (1% solution) | 8.8–9.2 |
| Grades | IP / BP / EP / USP |
| Packaging | 25 kg HDPE bags |
Applications
- Buffer in pharmaceutical injectable formulations
- pH adjuster in oral and topical products
- Sequestrant and emulsifier in processed foods
- Buffer in cell culture and microbiological media
- Haemodialysis concentrate ingredient
- Water softening and treatment applications
Why Source from Surravi Phharma?
- Ready stock maintained in our centralised AC warehouse, Hyderabad
- IP / BP / EP / USP grades available
- Complete documentation: COA, MSDS, Regulatory certifications
- Flexible quantities — lab scale to bulk commercial
- Prompt delivery with pan India logistics support
Frequently Asked Questions
Where can I buy Disodium Phosphate Anhydrous (DSP) in Hyderabad?
Surravi Phharma supplies Disodium Phosphate Anhydrous (Naâ‚‚HPOâ‚„) in IP, BP, EP, and USP grades in Hyderabad. Ready stock. Used as a pharmaceutical buffer and food grade sequestrant. Call +91 8008002576.
What is the pH of a Disodium Phosphate Anhydrous solution?
A 1% w/v aqueous solution of Disodium Phosphate Anhydrous has a pH of approximately 8.8–9.2. It is an alkaline buffer salt. When combined with Monosodium Phosphate in the correct ratio, it creates a precise phosphate buffer at any pH between 5.8 and 8.0 — essential for injectable formulations and biological media.
What is the difference between DSP Anhydrous and DSP Dihydrate?
Both are chemically Na₂HPO₄ but differ in water content. Anhydrous has no crystallisation water and is more hygroscopic. Dihydrate (Na₂HPO₄·2H₂O) is less hygroscopic and easier to handle in solid-dose formulations. For liquid preparations and injectable buffers, both can be used with appropriate weight adjustments.
Can DSP Anhydrous be used as a laxative in pharmaceutical formulations?
Yes. Sodium phosphate (combinations of monosodium and disodium phosphate) are used as osmotic laxatives and bowel preparation agents. They draw water into the bowel by osmosis, promoting bowel evacuation. Formulations include oral solutions and enemas for colonoscopy bowel preparation.
Is Disodium Phosphate Anhydrous approved as a food additive in India?
Yes. Disodium Phosphate is approved as a food additive (FSSAI INS 339) in India for use as an emulsifier, sequestrant, and buffer in processed food products including processed cheese, bakery products, and beverages within specified usage limits.