Monosodium phosphate (MSP), also known as anhydrous monobasic sodium phosphate and sodium dihydrogen phosphate, is an inorganic compound of sodium with dihydrogen phosphate (H2PO4−) anion. One of many sodium phosphates, it is a common industrial chemical. It exists as an anhydrous salt, as well as mono- and dihydrates.
- Cas No:
- 10049-21-5
- Formula:
- NaH2PO4. H2O
- Molecular Weight:
- 138.0
- Character:
- Colorless crystals or white powder. Very soluble in water. Very slightly soluble in ethanol (96%)
- Packaging:
- 25/50 Kg. HDPE bags with polyliner inside.
- Storage:
Available Grade & Specification
| Item | BP | USP | FCC |
|---|---|---|---|
| Assay | NLT 98.0% & NMT 100.5% of NaH2PO4 on dried substance | NLT 98.0% & NMT 103.0% if NaH2PO4 on anhydrous basis | NLT 98.0% & NMT 103.0% if NaH2PO4 on anhydrous basis |
| Identification | Positive | Positive | Positive |
| Acidity(pH) | 4.2 to 4.5 | 4.1 to 4.5 | 4.1 to 4.7 |
| Clarity & color of solution | Pass the test | ||
| Arsenic | 2 ppm Max | 8PPM Max | 3PPM Max |
| Heavy Metals | 10 PPM Max | 0.002% Max | 4PPM Max (as Pb) |
| Iron | 10 PPM Max | ||
| Chloride | 200 PPM Max | 0.014%% Max | 10 PPM Max |
| Sulphates | 300 PPM Max | 0.15 % Max | |
| Reducing substances | Pass the test | ||
| Loss on drying | 11.5% to 14.5% | 10.0% to 15.0% | 10.0% to 15.0% |
| Insoluble substances | 0.2% Max | 0.2% Max | |
| Aluminium calcium & related elements | Pass the test | ||
| Organic volatile impurities | Pass the test |
Application & Industries
Food
In baking powder.
As dry Acidulant for foods.
As sequestrant for foods.
Cattle food supplement.
Buffer.
Emulsifier.
Nutrient supplement.