Disodium phosphate (DSP), or sodium hydrogen phosphate, is the inorganic compound with the formula Na2HPO4. It is one of several sodium phosphates. The salt is known in anhydrous form as well as forms with 2, 7, 8, and 12 hydrates. All are water-soluble white powders; the anhydrous salt being hygroscopic.
- Cas No:
- 10039-32-4
- Formula:
- Na2HPO4. 12H2O
- Molecular Weight:
- 358.14
- Character:
- Colorless transparent crystals, efflorescent, very soluble in water, practically soluble in ethanol (96%)
- Packaging:
- 25/50 Kg. HDPE bags with polyliner inside.
- Storage:
- Store in a well closed container
Available Grade & Specification
| Item | USP | BP | IP |
|---|---|---|---|
| Assay | NLT 98.0% & NMT 100.5% of Na2HPO4 on dried basis | 98.5 % to 102.5 | NLT 98.0% & NMT 100.5% of Na2HPO4 on anhydrous basis |
| Identification | Positive | Positive | Positive |
| Loss on drying | 55.0% to 64.0% | 57.0%-61.0% | 57.0%-61.0% |
| Insoluble substances | 0.4% max | ||
| Chloride | 0.06% Max | 200 PPM Max | 250 PPM Max |
| Sulphate | 0.2% Max | 500 PPM Max | 600 PPM Max |
| Arsenic | 16 PPM Max | 2 PPM Max | 2 PPM Max |
| Heavy Metals | 0.002% | 10 PPM Max | 10 PPM Max |
| Appearance of solution | 45.0% - 57.0% | Pass the test | 45.0% - 57.0% |
| Reducing substances | Pass the test | Pass the test | |
| Monosodium phosphate | 2.5% Max | Pass the test | |
| Clarity & Color of solution | Clear & Colorless | ||
| Iron | 20 PPM Max | 20 PPM Max |
Application & Industries
Food
Baking powder Mfg.
Cheese Manufacturing.
Dietary supplement.
Emulsifier.
Texturizer.