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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

Short-term aquatic toxicity studies with COASOL 290 PLUS were conducted in fish, invertebrates and algal species. In fish, the acute toxicity of COASOL 290 PLUS was assessed on Zebrafish (Brachydanio rerio), over an exposure period of 96 hours in a semi-static system. The test item was not fully soluble at all tested concentrations, hence a WAF method was used to produce a range of concentrations at nominal loading rates from 6.25 to 100.0 mg/L. The 24, 48, 72 and 96h LL50 values were 35.01 mg/L. In invertebrates, the acute toxicity of COASOL 290 PLUS was assessed in an acute immobilisation test with Daphnia magna, over an exposure period of 48 hours in a semi-static test system. The test item was not fully soluble at all tested concentrations, hence a WAF method was used to produce a range of concentrations at nominal loading rates from 1.25 to 20.0 mg/L. The 48h EL50 value for COASOL 290 PLUS was 5.16 mg/L. For the algal species, the effect of COASOL 290 PLUS was assessed on algal growth using the unicellular green alga Pseudokirchneriella subcapitata (Selenastrum capricornutum), over an exposure period of 72 hours. The test item was not fully soluble at all tested concentrations, hence a WAF method was used to produce a range of concentrations at nominal loading rates from 1.0 to 100 mg/L.With respect to the inhibitory effect of the test item, the 0-72 h average specific growth rates, areas and yield were significantly different from that of the control group at the examined nominal loading rates of 3.1 – 100.0 mg/L, therefore the NOELR was determined as 1.0 mg/L nominal loading rate WAF; the LOELR was determined as 3.1 mg/L nominal loading rate WAF. The 72-hour EL50 for growth was established to be 5.52 mg/L, for yield 2.77 mg/L and for biomass 2.94 mg/L. Testing for toxicity to microorganisms has been waived since COASOL 290 PLUS is classified as readily biodegradable at an application concentration (3.4 mg/L) which is comparable or higher than the concentrations expected in the inflow of a sewage treatment plant (STP).

Taken together, the lowest aquatic toxicity value for COASOL 290 PLUS was the 48-hour EL50 of 5.16 mg/L, obtained in the acute immobilisation test with Daphnia magna.