
Benzalkonium Chloride (MF: C₂₇H₄₂ClNO₂ MW: 448.08) is a quaternary ammonium cationic surfactant characterized by high bactericidal efficacy, low irritancy, and preservative properties. Additionally, it possesses surfactant functionality and is widely used in pharmaceutical, personal care, and industrial applications.
| Item | Specification |
| Melting point | 162–164°C (lit.) |
| Boiling point | 162°C [at 101325 Pa] |
| Bulk density | 440 kg/m³ |
| Density | 0.998 g/mL at 20°C |
| Vapor Pressure | <0.001 hPa at 2°C |
| Refractive Index | 1.5650 (estimate) |
| Solubility | Highly soluble in water; soluble in organic solvents such as ethanol and isopropanol; insoluble in non-polar solvents like ether and benzene. |
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