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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 246-689-3 | CAS number: 25167-67-3
Water solubility
Administrative data
Link to relevant study record(s)
Description of key information
The solubilities of butenes in water were reported to range from 222 to 263 mg/L. The data were reported for two members of the of butenes category: but-1-ene (CAS 106-98-9) and 2-methylpropene (CAS 115-11-7). Insoluble in water, miscible with ether, alcohols, hydrocarbons and sulphuric acid.
Key value for chemical safety assessment
- Water solubility:
- 242.5 mg/L
- at the temperature of:
- 25 °C
Additional information
The study by McAuliffe (1966) predates the implementation of GLP and standard guidelines. However, the method is described in detail and is considered appropriate for determining the solubility of a gaseous substance. The study is therefore deemed suitable as the key study for this endpoint. The solubility of butenes therefore is considered to range from 222 mg/L to 263 mg/L at 25°C. It should be noted that the solubility was measured in a closed system with an equilibrium between the vapour and water phase. This is an artificial situation and, in the environment, the observed solubility would be expected to be much less.
The solubility of 2-methylpropene is 263 mg/L at 25°C (McAuliff 1966). The water solubility of but-1-ene is 222 mg/L at 25°C (McAuliff 1966). The mean of the water solubility values for the butenes is 242.5 mg/L at 25°C and this has been used to complete the 'key value for chemical safety assessment'.
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.
