Petroleum gas oil fraction, co-processed with renewable hydrocarbons of plant and/or animal origin

Toxicity to aquatic algae and cyanobacteria

Description of key information

A sample of diesel fuel was tested in an acute algal toxicity study using the WAF methodology and following OECD Guideline 201. The 72 -hour EL₅₀ (loading rate resulting in 50% decrease in growth of algae) was 10 mg/L. The NOEL was 3 mg/L.

Supporting PETROTOX (version 4.01) modelled values are available. The model predicted the LL₅₀ of the substance for P. subcapitata to be 3.40 mg/L and EL₁₀ 0.17 mg/L.

Additional information

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 (K_MW) that describe the partitioning of the hydrocarbons between the water and organism.