Registration Dossier
Registration Dossier
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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.
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EC number: 500-051-3 | CAS number: 26780-96-1
Dissociation constant
Administrative data
Link to relevant study record(s)
Description of key information
Based on the estimated pKa-range (4.2- 5.0) under environmental conditions (pH 5 - 9) this substance is mainly present in undissociated form (Currenta, 2010).
Key value for chemical safety assessment
Additional information
According to QSAR estimation, this substance does not have a significant dissociation at pH 5 - 9, and hence this estimate can be used for chemical safety assessment. On the other hand TMQ is mostly insoluble and it is scientifically very difficult to perform a test due to the lack of sensitive analytical method.
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.
