Registration Dossier
Registration Dossier
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EC number: 265-146-1 | CAS number: 64742-44-5 A complex combination of hydrocarbons resulting from treatment of a petroleum fraction with natural or modified clay in either a contacting or percolation process to remove the trace amounts of polar compounds and impurities present. It consists of hydrocarbons having carbon numbers predominantly in the range of C20 through C50 and produces a finished oil with a viscosity of at least 100 SUS at 100°F (19cSt at 40°C). It contains relatively few normal paraffins.
Long-term toxicity to fish
Administrative data
Link to relevant study record(s)
Description of key information
Key value for chemical safety assessment
Additional information
For other lubricant base oils, read across has been applied for the long-term toxicity in fish endpoint, using the results of long-term toxicity testing on invertebrates (Daphnia magna). 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 of other lubricant base oils in a 28-day freshwater fish study show no chronic toxicity to freshwater fish at or below its maximum attainable water solubility (Redman et al., 2010b). This supports the applied interspecies read across.
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