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Flash point

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Reference
Endpoint:
flash point of flammable liquids
Type of information:
experimental study
Adequacy of study:
key study
Study period:
20.10.05 - 20.03.06
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.9 (Flash-Point)
Version / remarks:
67/548/EEC
Deviations:
no
GLP compliance:
yes
Type of method:
closed cup
Flash point apparatus:
Pensky-Martens apparatus
Key result
Flash point:
167.5 °C
Atm. press.:
1 013.3 hPa

Before measurement the test item was liquefied at 40 °C for two hours and filled into the test vessel.

 

Weight / g

Measured flash point / °C

Atmospheric pressure

Corrected flash point / °C

81.2

170.0*

1025.3

 

80.7

168.0**

1025.3

167.69

81.1

168.0**

1025.3

167.69

 

* This data point was determined by the preliminary test (heating rate 8.5 K/min) and was not used for

the determination of the final flash point.

** This data point was determined by heating rate 5.5 K/min, as proposed in DIN EN ISO 2719.

 

The mean flash point corrected to 1013 hPa is 167.69 °C. The final flash point rounded down with an accuracy of 0.5 K is 167.5 °C.

Interpretation of results:
GHS criteria not met
Conclusions:
The flash point of the test item is 167.5 °C under atmospheric conditions (1013.3 hPa).
Executive summary:

The flash point was determined according to EU method A.9 in a closed cup experinment according to Pensky-Martens. The test item was liquefied at 40 °C for two hours and filled into the test vessel, which was progressively heated (8.5 K/min for the preliminary test and 5.5 K/min for the main test) until the vapour reached a sufficiently high concentration in air to produce a flammable mixture which could be ignited. The final flash point rounded down with an accuracy of 0.5 K was determined to be 167.5 °C.

Description of key information

The flash point of the test item is 167.5 °C under atmospheric conditions (1013.3 hPa).

Key value for chemical safety assessment

Flash point at 101 325 Pa:
167.5 K

Additional information

The flash point was determined according to EU method A.9 in a closed cup experinment according to Pensky-Martens. The test item was liquefied at 40 °C for two hours and filled into the test vessel, which was progressively heated (8.5 K/min for the preliminary test and 5.5 K/min for the main test) until the vapour reached a sufficiently high concentration in air to produce a flammable mixture which could be ignited. The final flash point rounded down with an accuracy of 0.5 K was determined to be 167.5 °C.

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