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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Description of key information

Reactive Brown 49 is not biodegradable, however, abiotic degradation takes place. At 25 °C, Reactive Brown 49 is stable at pH 4 with a half-life period greater than one year; while at pH 7 it has a half-life period of 64.3 h (about 2.7 days). It is unstable at pH 9 with half-life period shorter than one day.

Additional information