Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Environmental fate & pathways

Endpoint summary

Administrative data

Description of key information

The substance was found to not bioaccumulate in fish in a valid and reliable study.

Additional information

The bioaccumulation of cloquintocet-mexyl in an aquatic system was investigated in a GLP and guideline compliant study. The study is considered to be reliable without restrictions. The bioconcentration factor (BCF) of cloquintocet-mexyl in fish was observed to be 621 in whole fish and the depuration half-time of cloquintocet-mexyl was ranging from 0.3 to 0.6 days. Therefore, bioconcentration of cloquintocet-mexyl is not considered to be of concern as it is rapidly metabolised and eliminated in fish. Furthermore, cloquintocet-mexyl rapidly dissipates in soil and water/sediment systems and the primary metabolite of cloquintocet-mexyl has negligible bioaccumulation potential. Therefore, the potential for bioaccumulation of cloquintocet-mexyl and its relevant metabolites in the environment is very low.