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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Long-term toxicity to aquatic invertebrates

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Administrative data

Link to relevant study record(s)

Description of key information

Key value for chemical safety assessment

Fresh water invertebrates

Fresh water invertebrates
Effect concentration:
0.063 mg/L

Additional information

Chronic effects of 2 -mercaptoethanol were investigated in a chronic GLP test accordingly to OECD guideline 211 using Daphnia magna as test organisms. After 21 days, mortality was the most sensitive endpoint in this study resulting ina NOEC >0.0632 mg/l and a LOEC of 0.1264mg/l related to the corrected nminal concentrations. No significant reproduction or any other additional significant adverse effects or abnormal behaviour were observed in any of the test treatments.