Registration Dossier
Registration Dossier
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EC number: 683-326-1 | CAS number: 68815-17-8
Endpoint summary
Administrative data
Description of key information
The substance is not expected to hydrolyze because it is insoluble in water. Moreover, no significant abiotic degradation process had occurred during the ready biodegradability study.
During the ready biodegradability study, the substance was rapidly degraded during the first 6 days of the test. Then, the degradation slowed down and progresses with a low rate. At the end of the test it was reached a biodegradation of 61,4 %. The pass threshold has been overcame but the 1O-day window criteria was not met. However, it should be considered the following:
- the shape of the degradation curve suggests that the biodegradation process is not ended;
- the Guidance on the Application of the CLP Criteria (Version 5.0; July 2017) states that “levels of biodegradation must be achieved within 10 days of the start of degradation … unless the substance is identified as an UVCB or as a complex, multiconstituent substance with structurally similar constituents. In this case, and where there is sufficient justification, the 10-day window condition may be waived and the pass level applied at 28 days.
Therefore Tall oil, polymd., oxidized is considered readily biodegradable, although it does not pass the 10-day window criteria.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.
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