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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Physical & Chemical properties


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Administrative data

Link to relevant study record(s)

Description of key information

Flammability: Extremely flammable liquid

Key value for chemical safety assessment

extremely flammable

Additional information

The flammability study is not required for liquids as flammability is assessed on the basis of flash point and boiling point.

There is no indication, on the basis of chemical structure or experience in handling and use, that the substance is pyrophoric (flammable in contact with air) or flammable in contact with water.

Therefore, in accordance with Section 1 of REACH Annex XI, there is no requirement to conduct further flammability testing.

Justification for classification or non-classification

Based on the measured flashpoint (<-30°C) and boiling point (34 ±1°C), ethanethiol is classified as an extremely flammable liquid (Category 1; H226: Extremely flammable liquid and vapour) according to the criteria of Regulation (EC) No. 1272/2008 (CLP).