Registration Dossier
Registration Dossier
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EC number: 200-837-3 | CAS number: 75-08-1
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
Ethanethiol has a pKa of 10 and therefore is not expected to dissociate in the environment.
Key value for chemical safety assessment
- pKa at 20°C:
- 10
Additional information
In accordance with REACH Chapter R.7A, this endpoint can be waived for ionisable substances with pKa greater than 10, as they will not tend to dissociate in water under normal environmental conditions. Ethanethiol has a pKa of 10 and therefore is not expected to dissociate in the environment. This SPARC online calculation is considered reliable and appropriate for use with this substance.
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.
