Sodium dihydrogen phosphate (NaH2PO4) is an inorganic compound that consists of sodium (Na+), dihydrogen phosphate (H2PO4−) anion, and is a type of sodium phosphate salt. It is commonly found in two forms:
1. **Anhydrous Sodium Dihydrogen Phosphate (NaH2PO4)**
2. **Sodium Dihydrogen Phosphate Monohydrate (NaH2PO4·H2O)**
# **Properties:**
- **Molecular weight:**
- Anhydrous: ~119.98 g/mol
- Monohydrate: ~137.99 g/mol
- **Solubility:** Highly soluble in water
- **Acidity:** Slightly acidic in aqueous solutions due to partial ionization of H2PO4−
- **Appearance:** White crystalline powder or granules
# **Uses:**
- **Buffering agent** in biochemistry and food industries
- **Acidity regulator** in food processing