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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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.
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EC number: - | CAS number: -
Hydrolysis
Administrative data
Link to relevant study record(s)
Description of key information
In accordance with point 9.2.2.1. of Column 2 (Specific rules for adaptation from Column 1) of Annex VIII of the Regulation (EC) No. 1907/2006, the test does not need to be performed if the substance is highly insoluble, or if it is readily biodegradable.
Although the available water solubility study indicates that the substance is soluble in water, solubility work in the ecotoxicity testing indicated that this is not the case. As the substance is known to be surface active, it is expected that the test material will aggregate into micelles in aqueous conditions and be dispersed rather than forming a solution.
Furthermore, in a ready biodegradability study conducted in accordance with OECD 301 B on the test material, 52 % biodegradation was attained over the test period. Although this constitutes a classification as "not readily biodegradable" (pass criteria is 60 %), the test material did demonstrate significant degradation. This is anticipated to be an underestimate of the biodegradability due to the difficulty of testing surface active materials. The study director encountered difficulty with the dosing of test vessels in the pre-study solubility work. It is expected that the tendency of the test material to form micelles limited the availability of the substance to the microorganisms, which in turn limited the rate of biodegradation. Therefore it is expected that any free test material in solution would be rapidly mineralised in the environment, and further degradation studies would not provide additional information.
In accordance with the ECHA guidance document Guidance on Information Requirements and Chemical Safety Assessment Chapter R.7b Endpoint Specific Guidance (v. 2.0 Nov 2014), it is likely that the aqueous environment may not be the principal environmental compartment of concern. As the available toxicity and ecotoxicity information indicate that further information would not be required for risk assessment purposes.
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.
