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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

Description of key information

During three hour OECD 209 test with Diquat C16-18 both the EC50 and EC10 were determined.

Key value for chemical safety assessment

EC50 for microorganisms:
59.5 mg/L
EC10 or NOEC for microorganisms:
32.1 mg/L

Additional information

The EC10 should be used for the derivation of the PNEC micro-organisms as this value will have the highest predictive power. Values given are corrected for the active ingredient content of 94.5%.