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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

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.