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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

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Administrative data

Link to relevant study record(s)

Description of key information

During 48 h no toxic effects against Daphnia magna were observed at a limit test concentration of 100 mg/L.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
100 mg/L

Additional information

A study was performed to assess the acute toxicity of 2-amino-4,5-dichlorobenzenesulfonic acid to Daphnia magna STRAUS under static conditions in a closed bottle system. The study was conducted in accordance with the Council Regulation (EC) No 440/2008, Method C.2 ‘Acute toxicity for Daphnia’ (2008) which is equivalent to OECD Guideline for Testing of Chemicals No. 202 'Daphnia sp., Acute Immobilisation Test' (adopted April 13, 2004). The Daphnia were exposed to a limit test concentration of nominally 100 mg/L of the substance dissolved in dilution water. Auxiliaries used to prepare the test media were an ultrasonic bath, a magnetic stirrer and a folded filter. Observations were made on the swimming ability and the immobilisation rate, respectively, after 24 and 48 hours of exposure. No toxic effects against Daphnia were observed at a limit test concentration of 100 mg/L. The results are expressed in terms of nominal concentrations at 24 and 48h. Effective concentrations correspond to 96.1 % of nominal values at 0 hours and to 96.0 % of nominal values at 48 hours. The validity criteria of the test were met.

The result should read as >100 mg/L.