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Environmental fate & pathways

Henry's Law constant

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Description of key information

Log Kaw: 3.22 at 19.7°C Henry's Law Constant for L3 at environmental temperature (12°C): 2.59 E+06 Pa m3mol-1

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
2 590 000
at the temperature of:
12 °C

Additional information

The transfer of a substance from the water phase to the gas phase can be estimated by means of the Henry’s Law Constant (HLC).

A log Kaw of 3.22 (Kaw = 1660) at 19.7°C was determined in a reliable study conducted according to generally accepted scientific principles.

This is equivalent to Henry's Law Constant (HLC) of 5410000 Pa m3 mol-1 at 19.7°C, 2590000 Pa m3 mol-1 at 12°C.

(HLC = Kaw x RT)