Registration Dossier
Registration Dossier
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EC number: 217-038-0 | CAS number: 1726-23-4
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
Annex XIII of REACH Regulation 1907/2006 lays down criteria for the identification:
(i) persistent, bioaccumulative and toxic substances (PBT-substances), and
(ii) very persistent and very bioaccumulative substances (vPvB-substances)
A substance is identified as a PBT substance if it fulfils the criteria in Sections 1.1, 1.2 and 1.3. A substance is identified as a vPvB substance if it fulfils the criteria in Sections 2.1 and 2.2.
Guidance is available on the information requirements and chemical safety assessment (Chapter R.11: PBT Assessment) and this has been followed in assessing the substance.
Taking account of the known physico-chemical, toxicological and ecotoxicological properties of the substance, together with that information on these properties that may be obtained by read-across to structurally analogous substances and predictions obtained by QSAR modelling, the following assessment is made:
Persistence
The tested substance is not persistent (P) neither very persistent because it was found to be readily biodegradable according to the OECD test guideline 301C.
Bioaccumulation
The experimental octanol/water partition coefficient (log Kow) of 6.17 at 40 deg C suggests the potential for the substance to be bioaccumulative. In general, at log Kow values between 4 and 5, log BCF increases linearly with log Kow. Using the tool provided by EPA KOWWIN v1.68 the estimated log Pow is 5.92 at 25 deg C.
BCF has been calculated using the computer program BCFBAF (v3.01). It is predicted that the substance has a BCF in the range 158 -231 L/Kg ww, applying the above log Kow values. Furthermore, the BCF calculated using the CAESAR model is 13 L/Kg ww.
This indicates that the substance is not bioaccumulative (B).
Toxicity
Aquatic toxicity tests indicate that the substance is not toxic (T).
- Likely routes of exposure:
According to the preliminary estimations, the soil seems to be the most likely environmental target.
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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