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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Short-term toxicity to fish

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Administrative data

Link to relevant study record(s)

Description of key information

LC50, 96h, Danio Rerio= 24.1 mg/l

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
24.1 mg/L

Additional information

One study is available for acute toxicity to fish for Basic Brown 1 Acetate (acetic acid aqueous solution) and another one on the analogue substance 1. Since both substances show the same level of toxicity, the test on Basic Brown 1 Acetate performed following OECD 203 (Robama, 2001) was chosen as key study. Under the experimental conditions the Basic Brown 1 Acetate showed an LC50, 96h equal to 24.1 mg/l (LC50 recalculated to the dye concentration).