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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 203-492-7 | CAS number: 107-46-0
Henry's Law constant
Administrative data
Link to relevant study record(s)
Description of key information
Henry's Law constant: 510000 Pa m³/mol at 20°C and 780000 Pa m³/mol at 25°C
Key value for chemical safety assessment
- Henry's law constant (H) (in Pa m³/mol):
- 510 000
- at the temperature of:
- 20 °C
Additional information
Henry's Law Constant values of 510000 Pa m³/mol at 20°C and 780000 Pa m³/mol at 25°C were determined in a reliable study conducted according to generally accepted scientific principles.
The Henry’s Law Constant (HLC) can also be estimated from the ratio of the vapour pressure (VP) to the water solubility (WS).
HLC = (VP x MW)/WS
Where MW is molecular weight.
The calculated HLC value for HMDS at environmental temperature (12°C) is high, 450000 Pa m3 mol-1.
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.
