Registration Dossier

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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Administrative data

Description of key information

Key value for chemical safety assessment

Skin sensitisation

Endpoint conclusion
Endpoint conclusion:
adverse effect observed (sensitising)
Additional information:

In order to study a possible skin sensitisation potential of EMIM Methansulfonate, three groups each of five female mice were treated daily with the test item at concentrations of 25, 50, and 100% (w/v) in dimethylformamide by topical application to the dorsum of each ear once daily for three consecutive days. All treated animals survived the scheduled study period and no signs of systemic toxicity or local skin irritation were observed.

In this study Stimulation Indices (S.I.) of 1.56, 2.46, and 2.98 were determined with the test item at concentrations of 25, 50 and 100% (w/v) in dimethylformamide, respectively. A clear dose response was observed. The EC3 value calculated was about 100% (w/v). [BASF, 2011]


Migrated from Short description of key information:
The test item EMIM Methansulfonate was found to be a weak skin sensitiser in the Local Lymphe Node Assay (OECD 429).

Justification for classification or non-classification

EMIM Methansulfonate is considered to be skin sensitising (EU: R43; GHS: cat.1 H317) according to the criteria of EU Directive 67/548/EEC and EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No 1272/2008.