Registration Dossier
Registration Dossier
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EC number: 473-730-4 | CAS number: 928768-73-4
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
The results of different tests on biodegradability indicate that this substance is not readily biodegradable in an OECD 301B/F tests. However, this substance can be considered as readily biodegradable but failing the 10-day window. The mean cumulative biodegradation in one OECD 301F test was 62% and 70% using silica gel as carrier after 28 days indicating that this material will not persist in the environment. This is supported by the different other tests according to OECD301B/F.
As per a biodegradability test according to OECD 306 in marine water, it may be concluded that there is a potential for biodegradation in the marine environment, as well.There are sufficient data on aquatic bioaccumulation to determine that this substance is “not B” and “not vB”.Log Kowis below 4.5.
When compared to the screening criteria, the results of the short-term toxicity tests indicate that that this substance is “presumably not T”, but this determination is not definitive; the determination based on screening criteria only requires that “each of the three properties persistency, bioaccumulation and toxicity need to be considered in conjunction” (Chapter R.11, “PBT Assessment”,Guidance on information requirements and chemical safety assessment, ECHA, May 2008, Section R.11.1.2.2, p. 13).
See also attached PBT-Assessment Report in section 13 of this dossier.
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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