Registration Dossier
Registration Dossier
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EC number: 201-061-8 | CAS number: 77-83-8
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
Bioaccumulation can be discounted on the basis of low octanol-water partition coefficient of this substance (log Kow), which has been determined to be 2.4 for the cis isomer and 2.8 for the trans isomer. It is expected therefore that the substance has a low potential for bioaccumulation. As bioaccumulation is a critical criterion for PBT assessment (including vPvB assessment), assessment of the remaining criteria is not necessary for the substance itself.
However, the substance achieved biodegradation levels slightly below the non-persistence screening criteria of 60 % in a ready or enhanced ready biodegradability test and is not a rapidly hydrolysable substance (half-life > 12 hrs). Therefore the potential breakdown products or metabolites have been assessed for potential PBT / vPvB properties (see attached document in IUCLID for details). All breakdown products / metabolites have a log Kow lower than the B-screening criterion of greater than 4.5. Therefore, the substance is considered not to form PBTs or vPvBs.
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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