Fact sheet: 2,4,6-trichlorophenol

From: Public Services and Procurement Canada

Discover a list of a contaminant's important chemical properties, how it will react in the environment, main sources of contamination related, and a brief overview of health and safety issues.

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General information

CAS number


Molecular formula


Formula weight

197.5 g/mol


Phenolic compounds

Properties (at room temperature where applicable)

Compound properties list
Melting/boiling point69 °CSolid
Relative density1.49 g/cm3Sinks in water
Vapour pressure0.02 mm HgLow volatility
Vapour density0N/A
Solubility in water4,000 mg/LModerately soluble
Henry's law constant9 x 10-8atm·m3/molSlow volatilization when dissolved
log Koc (Depending on soil or sediment characteristics)1.7 - 3.3*Moderate adsorption to organic matter

Environmental behaviour

At 20 0C, 2,4,6-trichlorophenol is a solid with very low volatility and moderate solubility. Once it is dissolved, it is volatilizes slowly and adsorbs moderately to organic matter. When present in the soil, it dissolves at a moderate rate. Once dissolved, 2,4,6-trichlorophenol can reach the groundwater table or flow into a waterway, where it will be diluted before slowly volatilizing. Fragments of 2,4,6-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 large in size while the gaseous plume will be generally small in size.

Health and safety

2,4,6-trichlorophenol should be handled with care, as it is toxic.

Principal resources

2,4,6-trichlorophenol has been used as an intermediate in the production of higher chlorinated phenols, especially 2,3,4,6-tetrachlorophenol and pentachlorophenol. 2,4,6-trichlorophenol has also been used as a wood preservative, fungicides, bactericides, germicides and as an anti-mildew agent in leathers, glues and textiles.

The use of 2,4,6-trichlorophenol has been decreasing as the fabrication processes produces dioxins and furans.


Agency for Toxic Substances and Disease Registry (ATSDR). 1999. Toxicological profile for Chlorophenols. U.S. Department of Health and Human Services, Public Health Service, Georgia, U.S.A. (Viewed December 2013)

Montgomery, John H. 2007. Groundwater Chemicals, Desk Reference, Fourth Edition, CRC Press, Taylor and Francis Group, Florida, U.S.A.

United States Environmental Protection Agency (US EPA). 2007. Technology Transfer Network Air Toxics Website. 2,4,6-Trichlorophenol. (Viewed December 2013)