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EC number: 264-120-7
CAS number: 63393-96-4
The test substance was tested in an OECD screening test (OECD 301
D). After 28 d no biodegradation (-3%) was observed, whereas after a
test prolongation up to 60days a slight biodegradation activity of 10-20
% was observed. It is concluded that the test item is neither readily
biodegradable nor inherently biodegradable under the chosen conditions.
In the Guidance on Information requirements and chemical safety
assessment R11 PBT, additional assessment criteria are indicated whether
a substance may potentially fulfil criteria for PBT. The two recommended
models Biowin 2 (non linear model prediction) and Biowin 3 (ultimate
biodegradation time) within the complete Biowin-family (Biowin1-6) have
been used to screen the test item for criteria of persistence.
Additional modeling using Biowin 1-6 by Biowin vs. 4.10 was
performed with the test item to screen if the substance potentially
fulfils criteria for PBT. In all 6 models the criteria for fast or
readily (bio)degradation were met. Special care was taken to the results
of Biowin 2&3, but again the borderline values for the criteria P were
by far exceeded, Biowin2 =0.94 and Biowin 3 = 3.2. Based on the
screening models there is no indication that the test item is
Although, the QSAR modelling may indicate that the substance is
not persistent, the registrant decides on the current stage of knowledge
to evaluate the substance based on the prolonged screening test to be
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.
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