The monochlorophenols are chemical compounds consisting of phenol substituted with a chlorine atom. There are three isomers, 2-chlorophenol, 3-chlorophenol, and 4-chlorophenol.
| Chlorphenols | |||
| IUPAC name | 4-Chlorophenol | ||
| Other names | o-Chlorophenol | m-Chlorophenol | p-Chlorophenol |
| Chemical structure | |||
| CAS number | 95-57-8 | 108-43-0 | 106-48-9 |
| 25167-80-0 (mixture) | |||
| PubChem ID | |||
| Chemical formula | C6H5ClO | ||
| Molar mass | 128.56 g/mol1 | ||
| Physical state | liquid | solid | |
| Melting point | 7 °C | 33–35 °C | 43 °C |
| Boiling point | 174 °C | 214 °C | 220 °C |
| Density | 1.26 g/cm3 | 1.25 g/cm3 | 1.31 g/cm3 |
| Vapor pressure | 2.3 mbar (20 °C) | 0.23 mbar (20 °C) | 0.15 mbar (20 °C) |
| pKa[1] | 8.48 | 9.08 | 9.38 |
| Solubility | Low solubility in water (27–29 g/L at 20 °C) | ||
| Flash point | 85 °C | 120 °C | 121 °C |
| GHS hazard pictograms | |||
| GHS hazard statements | |||