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Environmental fate & pathways

Henry's Law constant

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Reference
Endpoint:
Henry's law constant
Type of information:
calculation (if not (Q)SAR)
Adequacy of study:
key study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
accepted calculation method
Reference:
Composition 0
Principles of method if other than guideline:
The Henry's Law Constant (HLC) was calculated using the water solubility, molecular weight and vapour pressure according to the following formula: (vapour pressure*molecular weight)/water solubility. This approach is in accordance with ECHA Guidance R.16 (2016).
GLP compliance:
no
Test material information:
Composition 1
Key result
H:
9.546 Pa m³/mol
Temp.:
20 °C
Conclusions:
The Henry's Law Constant has been calculated to be 9.546 Pa m³/mole at 20 °C indicating that the substance is expected to volatilize slowly from the water phase.

Description of key information

The substance is expected to be slowly volatile. A Henry's Law constant of 9.546 Pa m³/mol at 20 °C was calculated according to ECHA Guidance R.16 (ECHA, 2016).

Key value for chemical safety assessment

Henry's law constant (H) (in Pa m³/mol):
9.546
at the temperature of:
20 °C

Additional information

The Henry's Law constant (HLC) was calculated according to ECHA Guidance R.16 (ECHA, 2016) using the molecular weight, water solubility and vapour pressure as input parameters. A HLC of 9.546 Pa m³/mol resulted indicating a potential to volatilize slowly from the water phase to the atmospheric compartment.