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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

2-mercaptoethanol is acutely harmful to fish.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
37 mg/L

Additional information

In a non-GLP, 96-hour static test with the golden orfe Leuciscus idus according to a national standard method (DIN 38412 part 15), the toxicity of 2 -mercaptoethanol to fish was investigated. Statistical evaluation revealed a LC50 (96h) of 37 mg/l, related to the arithmetic mean of the measured concentrations.