About physical properties of lactic acid
| Chemical Abstracts Registration | CAS.-Reg.-No. [79-33-4] |
| Chemical formula | C3H6O3 |
| Chemical name | (S)-2-hydroxy-propanoic acid |
| Molecular Weight | 90.08 |
| Physical appearance | Aqueous solution |
| Taste | Mild acid taste |
| Melting point | 53oC / 127oF |
| Boiling point | > 200oC / 390oF |
| Solubility in water (g/100 g H2O) | Miscible |
| Dissociation Constant, Ka | 1.38 * 10^ -4 |
| pKa | 3.86 |
| pH (0.1% solution, 25oC) | 2.9 |
| pH (0.1 N solution, 25oC) | 2.4 |
| L(+) lactic acid |