Registration Dossier
Registration Dossier
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EC number: 926-605-8 | CAS number: -
Short-term toxicity to aquatic invertebrates
Administrative data
Link to relevant study record(s)
Description of key information
The estimated 48 hour EL50 for freshwater invertebrates is 17.06 mg/l based on mobility, for Hydrocarbons, C6-C7, isoalkanes, cyclics, <5% n-hexane.
Key value for chemical safety assessment
Additional information
The aquatic toxicity was estimated using the Petrotox computer model, which combines a partitioning model used to calculate the aqueous concentration of hydrocarbon components as a function of substance loading with the Target Lipid Model used to calculate acute and chronic toxicity of non-polar narcotic chemicals. Petrotox computes toxicity based on the summation of the aqueous-phase concentrations of hydrocarbon block(s) that represent a hydrocarbon substance and membrane-water partitioning coefficients (KMW) that describe the partitioning of the hydrocarbons between the water and organism. The estimated freshwater invertebrate EL50 value is 17.06 mg/l based on mobility, for Hydrocarbons, C6-C7, isoalkanes, cyclics, <5% n-hexane.
Additional data can be read across from n-hexane. An experimental LC50 of 45 mmol/m3 for Daphnia magna was measured as a water accommmodated fraction (Bobra et al, 1983).
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