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Ecotoxicological information

Short-term toxicity to fish

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Description of key information

Substances identified as C10 -13 hydrocarbons, and C11 -14 hydrocarbons, each containing n-alkanes, isoalkanes, and cyclics, with <2% aromatics in the C9 to C14 Aliphatics Category (</=2% aromatics) are not expected to demonstrate acute fish toxicity based on results of studies with a freshwater fish, Oncorhynchus mykiss. Each of these substances has been shown not to demonstrate effects, as measured by mortality in 96-hour LL50 studies, at the highest loading levels tested, which have ranged from 1000 to greater than 10,000 mg/L.
In comparison, the substance identified as C14-C18 hydrocarbons, containing n-alkanes, isoalkanes and cyclics, with <2% aromatics is also not expected to demonstrate acute fish toxicity based on the results of a study with marine water fish, Scophthalmus maximus. This substance has been shown not to demonstrate effects. as measured by mortality in 96-hour LL50 studies at the highest level tested, 1028 mg/L.

Key value for chemical safety assessment

Additional information

Substances identified as C10 -C13 hydrocarbons, C11 -C14 hydrocarbons and C14 -C18 hydrocarbons, each containing n-alkanes, isoalkanes and cyclics, with <2% aromatics, are not expected to demonstrate acute fish toxicity. Based on these results, the substance Paraffins (petroleum), normal C>10 (with a range of carbon covered by the studied substances), is not expected to demonstrate acute fish toxicity.