Registration Dossier
Registration Dossier
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: 212-974-6 | CAS number: 894-86-0
Partition coefficient
Administrative data
Link to relevant study record(s)
Description of key information
Partition coefficient calculated:
Log Kow(version 1.67 estimate): -1.10
Key value for chemical safety assessment
- Log Kow (Log Pow):
- -1.1
Additional information
The test substance is synthesized and handled as an aqueous sodium hydroxide solution (pH 13) only under inert gas atmosphere. It is instable in an aqueous phase at neutral pH or as solid material on air and oxidises rapidly to indigo CAS 482-89-3. The determination of the partition coefficient of indigo vat sodium salt is hence not possible.
The calculated log Pow for Vat Indigo sodium salt is: Log Kow(version 1.67 estimate): -1.10
The data on indigo is as follows:
Determined experimentally from solubilities: log Pow >1.4 at 23°C
Determined experimentally by HPLC: log Pow 2.7 at 23°C
Calculated by KOWWIN: 3.11
Experimental KOWWIN: 3.72
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.
