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Environmental fate & pathways

Henry's Law constant

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Description of key information

Weight of evidence: estimated results by Epi Suite and experimental results from published data: Henry's Law constant of trichloroacetic acid is 3.514x10-6 atm.m3/mole at 25 ºC. Supporting experimental results: the Henry's Law constant of trichloroacetic acid is 1.35 x 10-8 atm.m3/mole at 25 ºC.
Trichloroacetic acid is highly soluble and will partition strongly into aqueous atmospheric aerosols, and completely into fog and cloud water. Its occurrence and transport in the environment are therefore to be associated primarily with liquid phases.

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
0.36
at the temperature of:
25 °C

Additional information

Weight of evidence: estimated results by Epi Suite and experimental results from published data: Henry's Law constant of trichloroacetic acid is 3.514x10-6 atm.m3/mole at 25 ºC. Supporting experimental results: the Henry's Law constant of trichloroacetic acid is 1.35 x 10-8 atm.m3/mole at 25 ºC.

Trichloroacetic acid is highly soluble and will partition strongly into aqueous atmospheric aerosols, and completely into fog and cloud water. Its occurrence and transport in the environment are therefore to be associated primarily with liquid phases.