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Ecotoxicological information

Long-term toxicity to fish

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Description of key information

An experimental NOEC of 0.98 ± 0.25 mg/L and a QSAR estimated NOEC of 0.767 mg/L were reported. The estimated NOELR value from TLM QSAR is 1.286 mg/L.

The lowest value was used for the chemical safety assessment.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
0.98 mg/L

Additional information

Bentley et al. (1976) report the results of a long term toxicity study with dicyclopentadiene. At the highest test concentration in the bioaccumulation study, no mortality or change in behaviour was observed and so this value has been taken as a NOEC for the long-term toxicity to fish. Although this study is not GLP and does not fully comply with standard guidelines, it is considered to be adequate for the assessment of this endpoint.

The ECOSAR model predicted a 30 day ChV of 1.084 mg/L, which corresponds to a NOEC of 0.767 mg/L

The Target Lipid model derived an estimated NOELR for this substance of 1.286 mg/L.

The use of a QSAR model is considered appropriate as part of the weight of evidence for this endpoint.

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