Registration Dossier
Registration Dossier
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EC number: 438-930-8 | CAS number: 2550-52-9
Henry's Law constant
Administrative data
Link to relevant study record(s)
- 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
- 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
- Key result
- H:
- 13.39 Pa m³/mol
- Temp.:
- 20 °C
- Conclusions:
- The calculated Henry's Law Constant is 13.39 Pa m³/mol at 20 °C, indicating that the substance will be moderately volatile from the water surface to the atmosphere.
Reference
Description of key information
13.39 Pa m³/mol (Equation R.16-4, ECHA guidance R.16, 2016)
Key value for chemical safety assessment
- Henry's law constant (H) (in Pa m³/mol):
- 13.39
- at the temperature of:
- 20 °C
Additional information
The Henry’s Law Constant (HLC) was calculated according to equation R.16-4 of the ECHA Guidance R.16 (ECHA, 2016) using the molecular weight (238.41 g/mol), water solubility (0.13 mg/L) and vapour pressure (0.0073 Pa, 20 °C) as input parameters. The calculation resulted in an HLC of 13.39 Pa m³/mol, indicating that the substance will be moderately volatile from the water phase to the atmospheric compartment.
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