Description
BKC 80 stands for Benzalkonium Chloride 80%, a powerful quaternary ammonium compound widely used as a nonoxidizing biocide, preservative, and cationic surfactant.
Chemical Properties
| Property | Description |
| Chemical name | Benzalkonium Chloride |
| Common name | BKC 80 |
| Chemical class | Quaternary ammonium compound |
| General formula | C₆H₅CH₂N(CH₃)₂RCl |
| Alkyl chain (R) | C₈–C₁₈ (mainly C₁₂–C₁₆) |
| CAS number | 8001-54-5 |
| Molecular weight | ~340–400 g/mol (varies with alkyl chain) |
| Active content | ~80% (balance: water / solvents) |
| Appearance | Clear to pale yellow viscous liquid |
| Odor | Mild, characteristic |
| Solubility in water | Completely soluble |
| Solubility in solvents | Soluble in alcohols; insoluble in non-polar solvents |
| pH (10% solution) | ~6.0–8.0 |
| Ionic nature | Cationic surfactant |
| Density (25 °C) | ~0.95–1.00 g/cm³ |
| Melting point | Not sharply defined (mixture) |
| Boiling point | Decomposes before boiling |
| Surface activity | Strong surfactant and biocide |
| Chemical stability | Stable under normal conditions |
| Reactivity | Incompatible with anionic surfactants, strong oxidizers |
| Corrosivity | Non-corrosive to most materials at use levels |
Key Properties
- Excellent dispersing and penetrating ability
- Effective against bacteria, algae, fungi, and enveloped viruses
- Stable in hard water and low toxicity with no accumulation
- Slight almond-like odor and foams strongly when shaken
Applications
- Water treatment: Controls microbial growth and removes sludge
- Oil & gas: Used in enhanced oil recovery (EOR) and pipeline corrosion inhibitors
- Textiles: Provides antiseptic and antistatic finish
- Pharmaceuticals: Found in eye drops, dental solutions, and ointments
- Household & industrial disinfectants: Common in surface cleaners and sanitizers
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