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EC number: 202-796-7 | CAS number: 99-87-6
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:
- supporting 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:
- 3 400 Pa m³/mol
- Temp.:
- 20 °C
- Conclusions:
- The calculated Henry's Law Constant is 3400 Pa*m3/mol at 20 °C, indicating that the substance evaporates from the water surface to the atmosphere.
- Executive summary:
The Henry’s Law Constant (HLC) was calculated according to the ECHA Guidance R.16 (ECHA, 2016) using the molecular weight [g/mol], water solubility [mg/L] and vapour pressure [Pa] as input parameters.
The calculation resulted in an HLC of 3400 Pa*m^3/mol, indicating that the substance has a potential to evaporate from the water phase to the atmospheric compartment.
Reference
Description of key information
3400 Pa m3/mole (Equation R.16-4, ECHA guidance R.16, 2016)
Key value for chemical safety assessment
- Henry's law constant (H) (in Pa m³/mol):
- 3 400
- at the temperature of:
- 20 °C
Additional information
The Henry’s Law Constant (HLC) was calculated according to the ECHA Guidance R.16 (ECHA, 2016) using the molecular weight [g/mol], water solubility [mg/L] and vapour pressure [Pa] as input parameters.
The calculation resulted in an HLC of 3400 Pa*m^3/mol, indicating that the substance has a potential to evaporate from the water phase to the atmospheric compartment.
Information on Registered Substances comes from registration dossiers which have been assigned a registration number. The assignment of a registration number does however not guarantee that the information in the dossier is correct or that the dossier is compliant with Regulation (EC) No 1907/2006 (the REACH Regulation). This information has not been reviewed or verified by the Agency or any other authority. The content is subject to change without prior notice.
Reproduction or further distribution of this information may be subject to copyright protection. Use of the information without obtaining the permission from the owner(s) of the respective information might violate the rights of the owner.
