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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The toxicity of L-Cysteine to Daphnia magna was studied in a limit test according to OECD 202. No immobilisationt was observed at the only tested concentration of 100 mg/L. Therefore, the EC50 is determined to be >100 mg/L.

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Dose descriptor:
EC50
Effect concentration:
> 100 mg/L

Additional information