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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

The 96-hour LC50 for Oncorhynchus mykiss exposed to Ethanethiol was 2.4 mg/L, with 95% confidence limits of 1.7 and 3.0 mg/L. The 96-hour no mortality concentration was 1.7 mg/L. Based on clinical signs of toxicity observed in the 1.7 mg/L treatment group, the NOEC was <1.7 mg/L.

Key value for chemical safety assessment

Fresh water fish

Fresh water fish
Effect concentration:
2.4 mg/L

Additional information

Drottar (1999) is GLP compliant with exceptions of characterisation of test substance and stability of test substance under conditions of storage. The study follows OECD guideline 203 in a 96 hour test on Oncorhynchus mykiss and is considered to be reliable and suitable for use as the key study for this endpoint.