Substance profile
2,4,5-Trichlorophenol
2,4,5-Trichlorophenol is needles from alcohol, petroleum ether with a strong phenolic odor.
01 · Identification
What 2,4,5-Trichlorophenol is
2,4,5-Trichlorophenol is needles from alcohol, petroleum ether with a strong phenolic odor. Its molecular formula is C6H3Cl3O and its molecular weight is 197.4 g/mol. It boils at 262 °C, melts at 67 °C.
Under the GHS it carries the signal word Warning. It is classed as hazardous Air Pollutants (HAPs).
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 |
|---|---|
| H302 | Harmful if swallowed. |
| H315 | Causes skin irritation. |
| H319 | Causes serious eye irritation. |
| H400 | Very toxic to aquatic life. |
| H410 | Very toxic to aquatic life with long lasting effects. |
Precautionary statements: P264, P270, P273, P280, P301, P302, P305, P312, P313, P330, P332, P337, P338, P352, P391, P501
03 · Physical and chemical properties
2,4,5-Trichlorophenol 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 | 262 °C (503.6 °F) | HSDB | |
| 252.78 °C (487 °F) | at 760 mmHg | CAMEO | |
| 253 °C (487.4 °F) | ICSC | ||
| Melting point | 67 °C (152.6 °F) | HSDB | |
| 67.78 °C (154 °F) | CAMEO | ||
| Density | 1.68 g/cm³ | ICSC | |
| 1.678 g/cm³ | at 25 °C | HSDB | |
| Solubility | In water, 1,200 mg/L at 25 °C | at 25 °C | HSDB |
| In water, 8.82X10+2 mg/kg at 25 °C | at 25 °C | HSDB | |
| Vapor pressure | 0.0075 mmHg | at 25 °C | HSDB |
| 0.0218 mmHg | at 25 °C | ICSC | |
| 0.008 mmHg | at 25 °C | DOE PAC | |
| Flash point | 133 °C (271.4 °F) | HSDB | |
| Lower explosive limit (LEL) | When heated to decomp, it emits toxic fumes of /hydrogen chloride/and explodes. | HSDB | |
| Vapor density | 1 (air = 1) | CAMEO | |
| 6.8 (air = 1) | ICSC | ||
| Odor threshold | Odor threshold in water is as follows: 100 ug/l at 30 °C, 1000 ug/l @ 25 °C. | at 30 °C | HSDB |
Values compiled from PubChem Laboratory Chemical Safety Summary. Temperatures converted to Fahrenheit for reference.
04 · Source notes
Further notes on 2,4,5-Trichlorophenol
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.
Solubility
Solubility (g/100 g solvent, 25 °C): 615 acetone; 163 benzene; 51 carbon tetrachloride; 525 ether; 30, 525 denatured alc formula; 615 methanol; 56 liquid petrolatum at 50 °C; 79 soybean oil; 122 toluene
Source: HSDB
05 · Handling and storage
Storing and handling 2,4,5-Trichlorophenol
Storage conditions
Storage temp: ambient
Source: Hazardous Substances Data Bank (HSDB)
Incompatible materials
... The reaction of 2,4,5-trichlorophenol in an alkaline medium at high temperatures ... /produces/ ... dioxin ... .
Source: Hazardous Substances Data Bank (HSDB)
Reactivity
2,4,5-TRICHLOROPHENOL is a weak monobasic acid. Incompatible with acid chlorides, acid anhydrides and oxidizing agents. Produces dioxin in alkaline medium at high temperatures (NTP, 1992)
Source: CAMEO Chemicals
Planning storage for a mix of chemicals? Check 2,4,5-Trichlorophenol in the storage compatibility matrix →