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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Ecotoxicological information

Long-term toxicity to fish

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Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

Additional information

The long-term toxicity for fish endpoint is addressed by read across to long-term toxicity for aquatic invertebrates (Daphnia magna). Read across to OLBOs has been applied for the long-term toxicity to aquatic invertebrates endpoint, which is justified based on similarities in composition and physical/chemical properties between paraffin and hydrocarbon waxes and OLBOs. Toxic effects of hydrocarbons are primarily caused by narcosis, and occur in a narrow range of molar concentrations across aquatic taxa; hence, read across between species is justified.

Results of computer modelling to estimate aquatic chronic toxicity in a 28-day freshwater fish study show no chronic toxicity of paraffin and hydrocarbon wax to freshwater fish at or below its maximum attainable water solubility (Redman et al., 2010b). This supports the applied interspecies read across.