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Environmental fate & pathways

Henry's Law constant

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Description of key information

The weighted average estimated HLC value of C12-C18 TMAC using HENRYWIN v3.20 program (EPIWEB v 4.1) was found to be 1.64 x 10-10 atm-m3/mole at 25°C (i. e., equivalent to 1.66 x10-5 Pa-m3/mole).

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
0
at the temperature of:
25 °C

Additional information

The Henry’s law constant (HLC) of C12-C18 TMAC was estimated by HENRYWIN v3.20 using bond contribution method. This method uses valid Bond contribution values, which are determined for 59 chemical bonds by a least-square analysis of HLCs for 345 organic compounds. The value of the HLC for the test substance was finally calculated on a weighted-average basis using the mole fractions of the individual components. The weighted average estimated HLC value of C12-18 trimethyl QAS was found to be 1.64 x 10-10atm-m3/mole at 25°C (i. e., equivalent to 0.0000166 Pa-m3/mole).