CAS · 7782-85-6
Product Overview
Sodium Phosphate, Dibasic, Heptahydrate is a high-purity pharmaceutical-excipients supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.
Product Specifications
| Item | Specification |
|---|---|
| Grade | USP2024 |
| Appearance | Colorless or white, granular or caked salt. Its solutions are alkaline to phenolphthalein TS, a 0.1M solution having a pH of about 9. Effloresces in warm, dry air. |
| Assay (calculated on the dried basis) | 98% to 100.5% |
| Solubility | Freely soluble in water, very slightly soluble in alcohol |
| Identification A | Chemical reaction - Sodium |
| Identification B | Chemical reaction - Phosphate |
| Loss on Drying | 43% to 50% |
| Insoluble Substances | 0.4% max |
| Chloride | 0.06% max |
| Sulfate | 0.2% max |
| Arsenic | 16 ppm max |
| TAMC | 1000 cfu/g max |
| TYMC | 100 cfu/g max |
| E. coli | Negative |
| Bacterial Endotoxin | 2.5 EU/g max |
Applications
1. Laboratory and Biotechnology
● Buffering Agent:
Widely used in biological buffers, including PBS (phosphate-buffered saline).
Helps maintain physiological pH in biochemical reactions, especially enzyme studies and cell culture.
● Reagent in Analytical Chemistry:
Used in the preparation of reagents and solutions for spectroscopy, titrations, and analytical assays.
2. Pharmaceutical and Medical Uses
● Laxative and Osmotic Agent:
Incorporated in oral solutions or enemas for bowel cleansing prior to medical procedures (e.g., colonoscopy).
Draws water into the colon, facilitating evacuation.
● Pharmaceutical Excipient:
Serves as a stabilizer or pH buffer in injectable drugs, tablets, and suspensions.
3. Food and Beverage Industry
● Emulsifier and Stabilizer:
Used in processed cheese, dairy products, and meats to regulate texture, moisture, and pH.
● Food-Grade Buffer:
Sodium Phosphate, Dibasic, Heptahydrate丨CAS 7782-85-6 helps prevent spoilage by adjusting acidity and preserving product consistency.
4. Water Treatment
● Water Softening:
Binds calcium and magnesium ions to reduce hardness and prevent scale formation.
● Corrosion Inhibitor:
Helps protect metal surfaces in boiler and cooling water systems.
5. Detergents and Cleaners
● Acts as a builder in detergents, enhancing cleaning efficiency by softening water.
● Used in industrial degreasers and cleaning formulations for metals and glass.
6. Agriculture and Fertilizers
● Nutrient Additive:
Occasionally used as a phosphorus source in fertilizers for soil enrichment.
Benefits
√ Excellent Buffering Capacity
● Maintains stable pH in biological, chemical, and food systems.
√ Highly Soluble and Versatile
● Its hydrated form ensures easy dissolution, making it ideal for aqueous solutions and suspensions.
√ Food and Pharma Safe
● Generally recognized as safe (GRAS) when used within prescribed limits.
√ Non-Toxic and Biocompatible
● Suitable for use in medical and pharmaceutical applications with minimal side effects when properly dosed.
√ Cost-Effective and Readily Available
● Widely manufactured and affordable, with multiple grades (analytical, food, pharmaceutical).
Conclusion
Sodium Phosphate, Dibasic, Heptahydrate丨CAS 7782-85-6 is a versatile inorganic compound with wide-ranging uses in buffer solutions, medical preparations, food processing, and industrial systems. Its effectiveness in pH regulation, water treatment, and chemical formulation makes it a critical component across many sectors, valued for its safety, solubility, and stability.
Previous
Potassium Iodide丨CAS 7681-11-0
Next
Conclusion
A concise summary and suitability assessment for this product is available on request. Contact our team to discuss whether it fits your process and quality requirements.