In aqueous solutions, phosphoric acid behaves as a triprotic acid. The triprotic acid has three ionizable hydrogen atoms, which are lost sequentially.
| PRODUCT NAME | : | PHOSPHORIC ACID |
| Assay | 99.99% trace metals basis | |
| CAS number | : | 7664-38-2 |
| UN number | : | 1805 |
| Formula | : | H3PO4 |
| Odour | : | Clear Colourless |
| Solubility in water | : | COMPLETE , ( 5.48 g/mL ) |
| Density | : | 1.834 at OC |
| Boiling point | : | 213 OC |
| Melting point | : | 42 OC |
| Viscosity | : | 147 cP (100 %) |
| Skin absorption/irritation | : | YES |
| TLV Country NL Year 1995 | : | ppm 1 mg/m3 |
| Pollution category 1994 | : | D |
Properties :
- Molecular formula: H3PO4
- Molar mass : 98.00 g/mol
- Appearance : white solid or colourless, viscous liquid (>42 °C)
- Density : 1.885 g/mL (liquid)1.685 g/mL (85 % solution)2.030 g/mL (crystal at 25 °C)
- Acidity (pKa): 2.148, 7.198, 12.375