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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

Description of key information

Short-term toxicity of NExBTL renewable diesel (a UVCB substance of similar composition to the substance) toward an aquatic algae Scenedesmus subspicatus was determined in a GLP compliant laboratory according to OECD Guideline 201 (Alga, Growth Inhibition Test)". There was no statistical difference (Student's t-test, p < 0.05) in the growth between the control and the WAF test group. E*L50 > 100 mg/L.

Supporting PETROTOX (version 4.01) acute and chronic toxicity to aquatic algae values are available. The model predicted an LL50 of >1,000 and a EL10 of 2.67 mg/L.

Key value for chemical safety assessment

EC50 for freshwater algae:
100 mg/L

Additional information

PETROTOX 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.

PETROTOX predicted an LL50 of >1,000 and a EL10 of 2.67 mg/L.