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Physical & Chemical properties

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:
2019-03-18
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.9 (Flash-Point)
Deviations:
yes
Remarks:
The empty part (gaseous phase of the test item) of the flask exceeded 15% of its total capacity. This deviation was not considered to have affected the quality or the interpretation of the results obtained.
Qualifier:
according to
Guideline:
ISO 3679 (Determination of flash point - Rapid equilibrium closed cup method)
Version / remarks:
March 2015
Deviations:
yes
Remarks:
The empty part (gaseous phase of the test item) of the flask exceeded 15% of its total capacity. This deviation was not considered to have affected the quality or the interpretation of the results obtained.
GLP compliance:
yes (incl. certificate)
Type of method:
equilibrium method closed cup
Flash point apparatus:
Setaflash apparatus
Key result
Flash point:
136 °C
Atm. press.:
101.3 kPa
Remarks on result:
other:
Remarks:
136.0°C ± 1.0°C (corrected value).

Preliminary test


Atmospheric pressure: 98.6 kPa

Relative humidity: About 30%

With Stanhope apparatus

Temperature (°C)

Flash
observation

Observed temperature
(OT)

Corrected temperature with the calibration curve (CT)

Corrected to Patm
(C)

29.4

29.5

30.0

No

39.3

39.5

40.0

No

49.3

49.5

50.0

No

59.2

59.5

60.0

No

69.1

69.5

70.0

No

79.1

79.5

80.0

No

89.0

89.5

90.0

No

98.9

99.5

100.0

No

108.8

109.5

110.0

No

118.6

119.5

120.0

No

128.5

129.5

130.0

No

 

With Normalab apparatus

Temperature (°C)

Flash
observation

Observed temperature
(OT)

Corrected temperature with the calibration curve (CT)

Corrected to Patm
(C)

142.5

139.5

140.0

Yes

132.3

129.5

130.0

No

137.4

134.5

135.0

No

 

The flash point was observed between 135.0°C and 140.0°C (corrected values).

 

Main test

Atmospheric pressure: 98.7 kPa

Relative humidity: About 32%

Temperature (°C)

Flash
observation

Observed temperature
(OT)

Corrected temperature with the calibration curve (CT)

Corrected to Patm
(C)

137.4

134.5

135.0

No

138.4

135.5

136.0

Yes

 

Conclusion

The flash point of the test item was 136.0°C ± 1.0°C (corrected value).

 

Interpretation of results:
GHS criteria not met
Conclusions:
A flash point of 136.0°C ± 1.0°C (corrected value) at 101.3 kPa 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: 136°C at 1013 hPa (ISO 3679)

Key value for chemical safety assessment

Flash point at 101 325 Pa:
136 °C

Additional information

A measured flash point of 136°C at 1013 hPa was determined for the registered substance using a rapid equilibrium closed-cup 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.

The key study is supported by another measured flash point value of 135.5°C at 1013 hPa using a closed-cup method according to ISO 2719 and in compliance with ISO 9001:2008.

In available secondary sources to which reliability could not be assigned, flash point values of 110°C, 112°C and 122°C at 1013 hPa were reported for the substance.

Variations in flash point results could be as a result of variations in the purity of the test substance and the test method used.

A flash point of 136°C and a measured boiling point of 260.4°C, indicate that the substance should not be classified as a flammable liquid according to the criteria of Regulation (EC) No. 1272/2008.