CAS number
- 95-95-4
Molecular formula
- C6H3Cl3O
Formula weight
- 197.5 g/mol
Family
- Phenolic compounds
Compound properties list|
| Melting/boiling point | 68 °C | Solid |
| Relative density | 1.68 g/cm3 | Sinks in water |
| Vapour pressure | 0.02 mm Hg | Low volatility |
| Vapour density | 0 | N/A |
| Solubility in water | 1,200 mg/L | Moderately soluble |
| Henry's law constant | 2 x 10-7atm·m3/mol | Slow volatilization when dissolved |
| log Koc (Depending on soil or sediment characteristics) | 2.5 - 3.4* | Moderate adsorption to organic matter |
At 20 0C, 2,4,5-trichlorophenol is a solid with very low volatility and moderate
solubility. Once it is dissolved, it volatilizes slowly and adsorbs moderately to organic matter.
When present in the soil, it dissolves at a moderate rate. In the dissolved phase,
2,4,5-trichlorophenol can reach the groundwater table or flow into a waterway, where it will be
diluted before slowly volatilizing. Fragments of 2,4,5-trichlorophenol can also be carried into
waterways where they will be deposited at the bottom and dissolve. Once the source has been removed,
the adsorbed phase will take a while to disappear, slowly liberating contamination in either the
gaseous or dissolved state. The resulting dissolved plume will be relatively moderate in size while
the gaseous plume will be generally small in size.
2,4,5-trichlorophenol should be handled with care, as it is toxic.
In the United States, 2,4,5-trichlorophenol was taken off the market in 1985. The
principle use for 2,4,5-trichlorophenol was as an intermediate, especially in the production of the
herbicides 2,4-dichlorophenoxyacetic acid (2,4-D) and 2,4,5-trichlorophenoxyacetic acid (2,4,5-T).
2,4,5-trichlorophenol was also used as a fungicide, bactericide and organic synthesis.
