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Diss Factsheets

Physical & Chemical properties

Flash point

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Administrative data

Link to relevant study record(s)

flash point of flammable liquids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
ISO 3679 (Determination of flash point - Rapid equilibrium closed cup method)
Version / remarks:
March 2015
according to guideline
EU Method A.9 (Flash-Point)
Version / remarks:
GLP compliance:
yes (incl. QA statement)
Type of method:
equilibrium method closed cup
Flash point apparatus:
Setaflash apparatus
Key result
Flash point:
< -19.5 °C
Atm. press.:
1 013 hPa

Preliminary test

Atmospheric pressure  99.1 kPa

Relative humidity            About 49%

Temperature (°C)

Flash observation

Observed temperature (OT)

Corrected temperature with the calibration curve (CT)

Corrected to Patm (°C)







A flash was observed at -19.5°C (corrected value). The test was then stopped as the lowest limit of temperature of the apparatus was reached.


Main test


No main test was performed.

Interpretation of results:
Category 1 (extremely flammable liquids) based on GHS criteria
A flash point value of <-19.5 ± 0.5°C at 1013 hPa was determined for the substance using a relevant test method and in compliance with GLP. The result is considered to be reliable.

Description of key information

Flash point: <-19.5°C ± 0.5°C at 101.3 kPa (ISO 3679)

Key value for chemical safety assessment

Flash point at 101 325 Pa:
-19.5 °C

Additional information

A measured flash point value of <-19.5°C ± 0.5°C at 1013 hPa was determined for the substance using a rapid equilibrium method in accordance with ISO 3679 Test Method and in compliance with GLP. The result is considered to be reliable and is selected as key study.


In available secondary sources to which reliability could not be assigned, closed-cup flash point values of <-5°C, -14°C, -26.1°C, -27°C and -28°C at 1013 hPa were reported for the substance. An open-cup flash point value of <79°C at 1013 hPa was also reported for the substance.


Flash point values of <-19.5°C and measured boiling points in the range 31.5 to 33°C indicate that the substance should be classified as Flammable Liquid Category 1 (H224: Extremely flammable liquid and vapour) according to the criteria of Regulation (EC) No 1272/2008.