Substance profile
2,4-Dichlorophenol
2,4-Dichlorophenol is colorless crystals or needles with a strong medicinal odor.
01 · Identification
What 2,4-Dichlorophenol is
2,4-Dichlorophenol is colorless crystals or needles with a strong medicinal odor. Its molecular formula is C6H4Cl2O and its molecular weight is 163 g/mol. It boils at 210 °C, melts at 45 °C, is soluble in water.
Under the GHS it carries the signal word Danger. It is classed as carcinogens.
02 · GHS classification
Hazards and label elements
Harmonised classification under CLP Annex VI. This is the legally binding classification in the EU; other jurisdictions may differ.
| Code | Hazard statement |
|---|---|
| H311 | Toxic in contact with skin. |
| H302 | Harmful if swallowed. |
| H314 | Causes severe skin burns and eye damage. |
| H411 | Toxic to aquatic life with long lasting effects. |
Precautionary statements: P260, P270, P273, P280, P301, P302, P310, P312, P330, P331, P352, P391, P501
03 · Physical and chemical properties
2,4-Dichlorophenol properties
Every value is shown with the conditions it was measured under and the source it came from. Where sources disagree, all values are listed rather than one being picked — the difference is usually a different form of the substance, not an error.
| Property | Value | Conditions | Source |
|---|---|---|---|
| Boiling point | 210 °C (410 °F) | HSDB | |
| 210 °C (410 °F) | at 760 mmHg | CAMEO | |
| Melting point | 45 °C (113 °F) | HSDB | |
| Density | 1.4 g/cm³ | ICSC | |
| 1.4 g/cm³ | at 15 °C | CAMEO | |
| Relative density of the vapour/air-mixture at 20 °C (air = 1): 1.00 | at 20 °C | ICSC | |
| Solubility | Soluble in carbon tetrachloride | HSDB | |
| Soluble in ethanol, benzene, chloroform and ethyl ether. | HSDB | ||
| Soluble in aqueous alkali, oxygenated and chlorinated solvents. | HSDB | ||
| Vapor pressure | 0.075 mmHg | at 20 °C | ICSC |
| 0.09 mmHg | at 25 °C | HSDB | |
| Flash point | 113.89 °C (237 °F) | HSDB | |
| Autoignition temperature | 500 °C (932 °F) | ICSC | |
| Vapor density | 5.62 (air = 1) | HSDB | |
| 5.6 (air = 1) | ICSC | ||
| Odor threshold | Odor detection in water: 2.10X10-1 ppm (chemically pure) | HSDB | |
| In air: 0.21 ppm | Purity not specified | HSDB | |
| Detection in water: 0.04 mg/L; 0.002 mg/l; 0.0003 mg/L | Purity not specified | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Fire and explosion
Fire and explosion behaviour of 2,4-Dichlorophenol
These are descriptions rather than measured values, so they are kept out of the table above and quoted here with the source that reported them.
Fire and explosion
During vacuum fractionation of the mixed dichlorophenols produced by partial hydrolysis of trichlorobenzene, rapid admission of air to the receiver caused the column contents to be forced down into the boiler at 210 °C, and a violent explosion ensued. /Dichlorophenol mixed isomers/
Source: HSDB
05 · Handling and storage
Storing and handling 2,4-Dichlorophenol
Storage conditions
SRP: Local exhaust ventilation should be applied wherever there is an incidence of point source emissions or dispersion of regulated contaminants in the work area. Ventilation control of the contaminant as close to its point of generation is both the most economical and safest method to minimize personnel exposure to airborne contaminants.
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
... Can react vigorously with oxidizing materials.
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
2,4-DICHLOROPHENOL can react vigorously with oxidizing agents. Can also react with acids or acid fumes. Incompatible with acid chlorides and acid anhydrides. (NTP, 1992)
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 2,4-Dichlorophenol in the storage compatibility matrix →