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Ecotoxicological information

Toxicity to aquatic algae and cyanobacteria

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Administrative data

Link to relevant study record(s)

Reference
Endpoint:
toxicity to aquatic algae and cyanobacteria
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:

Description of key information

In accordance with column 2 of Annex VIII of the REACH regulation, testing for this end point is considered scientifically unjustified since there are mitigating factors indicating that aquatic toxicity is unlikely to occur as the test substance Zinc distearate (CAS No. 557-05-1) is highly insoluble (experimental solubility: 0.0046 mg/L at 25° C) in water. And also having the partition coefficient 4.64 and consider to be hydrophobic.

Key value for chemical safety assessment

EC50 for freshwater algae:
0.99 mg/L

Additional information

In accordance with column 2 of Annex VIII of the REACH regulation, testing for this end point is considered scientifically unjustified since there are mitigating factors indicating that aquatic toxicity is unlikely to occur as the test substance Zinc distearate (CAS No. 557-05-1) is highly insoluble (experimental solubility: 0.0046 mg/L at 25° C) in water. And also having the partition coefficient 4.64 and consider to be hydrophobic.