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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

No short-term terrestrial test data is available for diquat C16 -18. One long-term terrestrial test has been performed with diquat C16 -18.

The effects of diquat C16 -18 on mortality, biomass and reproduction of Eisenia fetida was tested according to OECD 222 under a static exposure for 28 days. Natural soil (Lufa 2.2) was used as substrate. The concentrations applied were 62.5, 125, 250, 500, and 1,000 mg test substance/kg soil dry weight.

The test is valid without restrictions and the results are considered to be reliable. After 28 days of exposure, no effects on survival of the adult worms were observed in all concentrations. After the following four weeks, no significant effects on the reproduction rate (average number of juveniles) were observed compared to the control. Hence, the NOEC is 1000 mg/kg dw soil i.e. 945 mg A.I./kg dw.