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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Key value for chemical safety assessment

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Measured information on short term toxicity to aquatic algae and cyanobacteria was not available for straight run gas oils, however suitable read across information from vacuum gas oils, hydrocracked gas oils and distillate fuels is available. The Shell (6304) study reported a 72 h ErL50 value of 22 mg/L for diesel fuel. Clark (2003) reported the same 72 h value when ultra low sulphur diesel was tested (EL50 = 22 mg/L). The Shell (6304) study has been chosen to represent this endpoint. It is a reliable (2), GLP compliant, near guideline study with no restrictions, it is fully adequate for assessment. There are several values supporting this EL50 including that calculated by PETROTOX with an estimated value of 2.079 mg/L.