Registration Dossier
Registration Dossier
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EC number: 931-251-2 | CAS number: -
PBT assessment
Administrative data
PBT assessment: overall result
- PBT status:
- the substance is not PBT / vPvB
- Justification:
Persistence
The substance is readily biodegradable indicating that the substance is not persistent (P).
Bioaccumulation
The octanol water partition coefficient of the substance (Log Kow = 8.70) 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. At high log Kow (>6), a decreasing relationship between the two parameters is observed and for very hydrophobic chemicals, reduced uptake due to the increasing molecular size may occur. The aquatic BCF of a substance is probably lower than 2000 L/kg if the calculated log Kow is higher than 10. BCF has been calculated using the computer program BCFBAF (v3.00). It is predicted that the substance has BCF of 21.4 L/kg wet weight. A phthalate ester with branched (as opposed to linear alcohol chains) has undergone risk assessment (European Union Risk Assessment Report on 1,2-benzenedicarboxylic acid, di-C9-11-branched alkyl esters, C10-rich and di-“isodecyl” phthalate,Final Report, 2003).The report considers bioaccumulation in aquatic organisms and cites a single test where a BCF of < 14.4 was determined for fish (Cyprinus carpio) according to OECD test guideline No. 305C. In the same test system, a BCF of 1.3-29.7 was determined for DEHP. The authors comments that higher BCFs have been determined with DEHP in fish in other assays and that the only BCF result available for the substance with fish is very low compared with the results available for DEHP. As a result the BCF for fish of 840 retained for the risk assessment of DEHP was used for the assessment of the exposure of humans via the environment of the substance. This value is higher than that calculated for 1,2-Benzenedicarboxylic acid, mixed decyl and lauryl diesters and may be used as a worst case scenario. The substance is considered not be bioaccumulative (B).
Toxicity
Aquatic toxicity tests do not indicate the substance meets the criteria to be regarded as toxic (T).
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