Registration Dossier
Registration Dossier
Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.
The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.
Use of this information is subject to copyright laws and may require the permission of the owner of the information, as described in the ECHA Legal Notice.
EC number: 263-731-6 | CAS number: 62780-89-6
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:
- key study
- Study period:
- 2016
- Reliability:
- 2 (reliable with restrictions)
- Rationale for reliability incl. deficiencies:
- accepted calculation method
- Qualifier:
- no guideline required
- Principles of method if other than guideline:
- The Henry´s Law Constant of the substance was calculated by using the computer program EUSES v2.1. This parameter is calculated from temperature corrected experimental vapour pressure and water solubility.
- GLP compliance:
- no
- H:
- 0.009 Pa m³/mol
- Temp.:
- 25 °C
- Remarks on result:
- other: Henry´s law constant is calculated based on temperature-corrected experimental vapour pressure and water solubility
- Conclusions:
- The study report describes a scientifically accepted calculation method to determine the Henry´s Law Constant using EUSES v2.1. No GLP criteria are applicable for the usage of this tool and the estimation is easily repeatable. The Henry's Law Constant of the substance was estimated to be 8.18E-03 Pa m³/mol at 25°C and estimated from the ratio of the vapour pressure (0.011 Pa at 20°C) and the water solubility (194 mg/L at 20°C).
- Executive summary:
The Henry´s Law constant of T001036 was determined by using EUSES v2.1 (Arcadis, 2016).Henry´s law states that the solubility of a gas in a liquid solution at a constant temperature will be proportional to the partial pressure of the gas which is above the solution (Henry, 1803). Sometimes, the term “air/water partition coefficient” refers to the dimensionless Henry´s law constant (HLC) and therefore describes the ratio of the equilibrium concentration of a dissolved substance in air and water. This parameter is calculated based on temperature-corrected experimental vapour pressure and water solubility. A very low Henry´s Law Constant (8.18E-03 Pa m3/mol) was calculated for T001036 related to 25 °C.
Reference
Description of key information
The study report describes a scientifically accepted calculation method to determine the Henry´s Law Constant using EUSES v2.1. No GLP criteria are applicable for the usage of this tool and the estimation is easily repeatable. The Henry's Law Constant of the substance was estimated to be 8.18E-03 Pa m³/mol at 25°C and estimated from the ratio of the vapour pressure (0.011 Pa at 20°C) and the water solubility (194 mg/L at 20°C).
Key value for chemical safety assessment
- Henry's law constant (H) (in Pa m³/mol):
- 0.008
- at the temperature of:
- 25 °C
Additional information
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.
