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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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: 281-589-3 | CAS number: 83969-12-4
Hydrolysis
Administrative data
Link to relevant study record(s)
- Endpoint:
- hydrolysis
- Data waiving:
- study scientifically not necessary / other information available
- Justification for data waiving:
- other:
Reference
Description of key information
The test item is produced in and later on supplied and used in form of an aqueous 15 - 20 % acetic acid solution. The substance has a sufficiently high solubility in water. The substance is stable at high temperatures, as before the dyeing process starts the liquid preparation of the test substance is diluted with, e.g., hot water / acidic acid to achieve the requested dyeing recipe.
The dyeing itself takes place at 96 to 105 °C at pH 3 to 4.5. The substance is also stable at neutral pH as can be seen in the UV/Vis Spectrum at different pH values. At basic pH >10 the chromophore precipitates, from which Basic Blue 159 methyl sulfate was formed by dissolving in acetic acid. It is hence considered scientifically unjustified to do an additional study for abiotic degradation of this substance.
Key value for chemical safety assessment
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.
