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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Key value for chemical safety assessment

EC50 for freshwater algae:
1.9 mg/L
EC10 or NOEC for freshwater algae:
0.106 mg/L

Additional information

- Effect of KS-235 on the growth of the green alga Selenastrum capricornutum (OECD Guideline No. 201)

ErC10 = 0.68 mg.l-1

ErC50 = 1.9 (1.5 - 2.4) mg.l-1

ErC90 = 5.1 mg.l-1

EbC10 = 0.32 mg.l-1 (95% confidence limits = 0.315 - 0.561 mg.l-1*)

EbC50 = 0.82 mg.l-1 (95% confidence limits = 0.561 - 1.00 mg.l-1*)

EbC90 >1.89 mg.l-1

* range between tested concentrations

NOEC was determined to be 0.106 mg/l