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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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 > 120 mg/l

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
120 mg/L

Additional information

No test are available on Acid Black 234, therefore the endpoint is covered with the test on the similar substance 1.

A limit test was performed on similar substance 1 showing a NOEC > 120 mg/l. The study has been presented to ECHA in the framework of a notification and the summary received is lacking of many information.

Another study (Synthesia, 1996) was performed on similar substance 1 testing different concentrations that allowed the extrapolation of a more realistic values for LC50, equal to 1890 mg/l and LC0, >1600 mg/l.

The results of the two studies are consistent and STAHL results have been chosen for CSA as more conservative.