Registration Dossier

Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

Currently viewing:

Administrative data

Link to relevant study record(s)

Description of key information

The estimated algal 48-hr EL50 value is 9.902 mg/L for Hydrocarbons, C6, n-alkanes, isoalkanes, cyclics, n-hexane rich and NOEL value is 2.215 mg/L, calculated using PETROTOX.

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 petroleum substance and membrane-water partition coefficients (KMW) that describe the partitioning of the hydrocarbons between the water and organism.

The estimated algal 48-hr EL50 value is 9.902 mg/L for Hydrocarbons, C6, n-alkanes, isoalkanes, cyclics, n-hexane rich and NOEL value is 2.215 mg/L, calculated using PETROTOX.