Disodium Phosphate Dihydrate — Pharma Grade Supplier, Hyderabad
Product Overview
Disodium Phosphate Dihydrate is the stable dihydrate form of disodium phosphate, offering slightly lower hygroscopicity than the anhydrous form. It is used as a pharmaceutical buffer, food sequestrant, and emulsifying agent, commonly specified in solid dosage form buffers and parenteral formulation applications.
Specifications
| CAS Number | 10028-24-7 |
| Molecular Formula | Na₂HPO₄·2H₂O |
| Appearance | White crystalline powder |
| Assay | NLT 98.0% |
| pH (1% solution) | 8.8–9.2 |
| Grades | IP / BP / EP / USP |
| Packaging | 25 kg HDPE bags |
Applications
- Buffering agent in parenteral formulations
- Emulsifying salt in processed cheese
- Food grade pH adjuster and sequestrant
- Pharmaceutical tablet excipient buffer
- Laxative bowel preparation ingredient
- Laboratory buffer solution component
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 Dihydrate in Hyderabad?
Surravi Phharma supplies Disodium Phosphate Dihydrate (Na₂HPO₄·2H₂O) in IP, BP, EP, and USP grades in Hyderabad. Ready stock. Used in pharma buffers and food applications. Call +91 8008002576.
What is the molecular weight and formula of Disodium Phosphate Dihydrate?
Disodium Phosphate Dihydrate has the molecular formula Na₂HPO₄·2H₂O and a molecular weight of 177.99 g/mol. It assays NLT 98.0% as Na₂HPO₄·2H₂O. The anhydrous form (Na₂HPO₄, MW 141.96) is used when water content must be strictly controlled.
How is Disodium Phosphate Dihydrate used in phosphate buffer saline (PBS)?
PBS is a standard buffer used in pharmaceutical research, cell culture, and injectable formulations. It is prepared by dissolving Disodium Phosphate Dihydrate and Monosodium Phosphate in water with sodium chloride to achieve pH 7.4 and isotonicity. It is the most common aqueous buffer used in biological and pharmaceutical work.
Can Disodium Phosphate Dihydrate be used as a food emulsifier?
Yes. Disodium Phosphate is approved as a food-grade emulsifying salt (INS 339ii) used in the production of processed cheese, cheese spreads, and dairy products. It disrupts the calcium protein matrix in cheese, allowing it to melt smoothly and preventing fat separation during heating.
Is Disodium Phosphate Dihydrate suitable for injectable pharmaceutical formulations?
USP grade Disodium Phosphate Dihydrate is used in injectable buffer systems. It must meet strict endotoxin (pyrogen) limits, heavy metal limits, and particulate matter specifications for parenteral use. When formulating for injectables, ensure the grade is specifically USP/EP injectable grade with endotoxin testing.