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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.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

Flash point

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Administrative data

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flash point of flammable liquids
Type of information:
not specified
Adequacy of study:
key study
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
data from handbook or collection of data
The use of secondary sources of data is acceptable when they are based on a critical evaluation of peer-reviewed data and a consequent selection of a reliable and representative value for the property under investigation. This is a peer reviewed handbook that has been cited by the US EPA in the Hazardous Substances Databank (HSDB). It is therefore accepted that this datasource is reasonably reliable.
Principles of method if other than guideline:
No method specified as data was obtained from handbook.
GLP compliance:
not specified
Type of method:
other: Not specified
Flash point apparatus:
other: Not specified
Key result
Flash point:
-28.9 °C
Atm. press.:
760 mm Hg
Remarks on result:
other: Standard atmospheric pressure assumed
Interpretation of results:
Category 2 (highly flammable liquids) based on GHS criteria
The flash point of 2,3-dimethylbutane is -28.9 °C.
Executive summary:

The flash point of 2,3-dimethylbutane is -28.9 °C. No information on the primary source of this data or the methods used is available. However, this information is taken from a reliable peer reviewed handbook and so can be considered reliable and suitable for use as the key study for this endpoint.

Description of key information

The flash point of 2,3 -dimethylbutane is reported to be -28.9 °C.

Supporting data is available for Hydrocarbons, C6, isoalkanes, <5% n-hexane and Isohexane. Based on an analogue approach, this data is read across to 2,3 -dimethylbutane.

The flash point of Hydrocarbons, C6, isoalkanes, <5% n-hexane is <0°C

Key value for chemical safety assessment

Flash point at 101 325 Pa:
-28.9 °C

Additional information