Registration Dossier

Ecotoxicological information

Endpoint summary

Administrative data

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Additional information

Aquatic toxicity studies with COASOL were conducted in fish, invertebrates, and algal species.

For fish, one reliable acute study with the juvenile turbot (Scopthalmus maximus) was available for assessment. The LL50 was >1.6 mg/L and based on the acute 96-hour exposure. Long-term testing in fish is waived for COASAL since the substance is classified as readily biodegradable and is not considered hazardous to the environment or human health.

 

For invertebrates, one reliable acute study with the marine copepod (Acartia tonsa) was available for assessment. The LL50 was 25 mg/L, based on the acute 48-hour exposure. Long-term testing in aquatic invertebrates is waived for COASAL since the substance is classified as readily biodegradable and is not considered hazardous to the environment or human health.

For the algal species, one reliable study with Skeletonema costatumas the test species was available for assessment. The EL50 and NOELR for the marine water species were 7.9 mg/L and 1.0 mg/L, respectively and based on growth rate following 72-hours of exposure.

 

Toxicity to microorganisms testing is waived for COASOL since it is classified as readily biodegradable in salt water at an application concentration (1.0 mg/L) which iscomparable or higher than the concentrations expected in the inflow of a sewage treatment plant (STP).

Taken together, the lowest aquatic toxicity value for COASOL was the LL50 of >1.6 mg/L, based on the 96-hour acute toxicity test with juvenile turbot (Scopthalmus maximus).