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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Ecotoxicological information

Endpoint summary

Administrative data

Description of key information

Reactive Red 066 is not toxic to fish. The acute toxicity of FAT 40063/A was evaluated on 8 fishes resulting in a TL0, TL50 and TL100 >1000 mg/L. The EC50 and EC100 of Reactive Red 066 are clearly higher than 184.2 mg/l in Dapnia magna.


The influence of FAT 92354/B on the growth of the freshwater plant Lemna gibba was assessed in a semi-static dose-response test. The 7-day EyC50 was calculated to be 32.0 and 30.8 mg test item/L for frond number and dry weight, respectively.


The toxicity of FAT 92354/A to activated sludge was determined in a 3-h respiration inhibition test. The IC50 (3 h) of the Reactive Red 066 to activated sludge was >320.0 mg/l.

Additional information