Registration Dossier

Data platform availability banner - registered substances factsheets

Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Endpoint summary

Administrative data

Description of key information

Additional information

Acute tests on all three trophic levels were performed to examine the aquatic toxicity of methanesulphonic acid. Algae turned out to be the most sensitive species revealing an EC50 (96h) of 7.6 - 24 mg/L. Thus, methanesulphonic acid is considered to be acutely toxic to aquatic organisms. Effects of methanesulphonic acid towards fish and daphnia were found in the same range providing a LC50 (96h) of 73 mg/L for fish and an EC50 (48h) of 70 mg/L for Daphnia.

No data on long-term toxicity on fish and Daphnia are available. The hazard assessment of methanesulphonic acid reveals neither a need to classify the substance as dangerous for the environment, nor is it a PBT or vPvB substance. Therefore, and for reasons of animal welfare, a long-term toxicity study in fish and Daphnia is not provided.