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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ciba-Geigy Ltd, 1988, is presented as the key information as the reliability rating for this study is 2, according to the criteria of Klimisch, 1997.

Key value for chemical safety assessment

EC50 for freshwater algae:
0.43 mg/L

Additional information

The Ciba-Geigy, 1988 study was performed in accordance to the OECD Guideline for testing number 202.

At the concentration-range tested of 10 -100% (0.087 -0.43 mg/L) of the prepared stock solution of TK10976, algal growth showed no or only very slight inhibition in regard to blank-control.

Results: EC50 (72h): > 0.43 mg/L.