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Flash point

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flash point of flammable liquids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018.10.31 - 2018.12.05
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
according to guideline
EU Method A.9 (Flash-Point)
GLP compliance:
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Type of method:
closed cup
Flash point apparatus:
other: flash point tester
Key result
Flash point:
>= 91 - <= 93 °C
Atm. press.:
ca. 101 325 kPa
Flash point:
>= 364 - <= 366 K
Atm. press.:
101 325 kPa

Test results of the flash point determination

Run Temperature
°C K
1 93 366
2 91 364
3 91 364
91 364

Note) Temperature in Kelvin (K) = Temperature in °C + 273.15

Interpretation of results:
GHS criteria not met
The flash point of 2,3-butanediol ((2R,3R)-rich) was 91 °C (364 K).
Executive summary:

The study was performed to determine the flash point of 2,3-butanediol ((2R,3R)-rich) by means of flash point tester according to EU method A.9 (closed cup method). The flash point was determined as the lowest temperature at which application of an ignition source caused the vapour of the test item to ignite under specified conditions of test. The test item was placed in a test vessel and heated or cooled at the test temperature according to the test method (room temperature ~ 290 °C). Ignition trials were carried out in order to ascertain whether or not the sample flashed at the test temperature.

The flash point of 2,3-butanediol ((2R,3R)-rich) was 91 °C (364 K).

Description of key information

The flash point of 2,3-butanediol ((2R,3R)-rich) was 91 °C (364 K).

Key value for chemical safety assessment

Flash point at 101 325 Pa:
91 °C

Additional information