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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Flammable limits are identified as being 2.5% - 100%

Key value for chemical safety assessment

extremely flammable

Additional information

The CRC Handbook (Lide 2008) is a peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint. The supporting study (WHO ICSC 2003) is also a peer reviewed source and reports the same value as the key study.

Justification for classification or non-classification

The substance is classified as a Category 1 flammable gas with the hazard statement "extremely flammable gas" under the CLP Regulations.