Registration Dossier
Registration Dossier
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EC number: 294-785-9 | CAS number: 91770-03-5
Dissociation constant
Administrative data
Link to relevant study record(s)
- Endpoint:
- dissociation constant
- Data waiving:
- study technically not feasible
- Justification for data waiving:
- the study does not need to be conducted because the analytical method is not sensitive enough
Reference
Description of key information
The study is considered inappropriate because the analytical methods are not sensitive enough to conduct the test. The test item has a reported water solubility of less than 5 mg/L. 5 mg/L is provided as a limit value as a worst case. The water solubility is calculated to be much lower than 5 mg/L. The test item mostly disperses, and the formation of micelles could hinder the dissociation chemistry. Based on a limit of 5 mg/L, this would produce a solution of 7.5 µM. Methods such as titration would require a solution of 0.01M.
The functional groups in the test item are not expected to be withing the UV/visible absorbance range or have a significant change in absorption over the environmental pH range.
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.
