Registration Dossier
Registration Dossier
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EC number: 245-883-5 | CAS number: 23783-42-8
Endpoint summary
Administrative data
Description of key information
Additional information
IThis substance, when present in air, is expected to exist entirely in the vapour phase. It is not expected to absorb UV light in the environmentally significant range of >290 nm and is not therefore expected to undergo direct photolysis on sunlit soil surfaces, in the atmosphere or in aquatic environments. However, modelling predicts that it is likely to undergo indirect photolysis through hydroxyl radical reaction at a fast rate, with an estimated half life of 3.2 hours (0.27 days) at an OH concentration of 1.5million OH/cm3 and a 12 hour day). Based on its chemical structure, the substance is expected to be hydrolytically stable under normal environmental conditions.
No biodegradation data is available on the substance itself. Data is available on two major components however. In a guideline study, the substance 2-(2-(2-methoxyethoxy)ethoxy)ethanol was found to be readily biodegradable and met the 10 day window. Full degradation occured within 13 days. In a guideline study, the substance 3, 6, 9, 12-tetraoxotridecanol was found to be readily biodegradable but did not meet the 10 day window. An analysis of the three components of this substance (that represent 3 adjacent molecule in the homologous series and that define a major part of this UVCB/multicomponent substance) using the BIOWIN QSAR shows that all are predicted to be readily biodegradable. However, an analysis of the fragment descriptions suggests on a semi-quantitative basis that that breakdown may be slower with increasing molecular size. The QSAR is therefore supportive of the experimental data. A conservative conclusion that would cover all potential compositions is therefore that the substance is readily biodegradable but does not meet the 10 day window.
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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