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Auto flammability

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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
26 September 2016 - 11 January 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
GLP compliant
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Reason / purpose:
reference to same study
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Version / remarks:
31 May 2008
Deviations:
no
Qualifier:
according to
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Version / remarks:
May 2003
Deviations:
no
Qualifier:
according to
Guideline:
IEC 60079-4 (Electrical apparatus for explosive gas atmospheres. Part 4: Method of test for ignition temperature)
Version / remarks:
1975
Deviations:
no
GLP compliance:
yes
Specific details on test material used for the study:
STABILITY AND STORAGE CONDITIONS OF TEST MATERIAL:
- At room temperature

OTHER SPECIFICS:
- Purity/composition correction factor: No correction factor required.
- Test item hanling: No specific handling conditions required, but for practical reason the test item could be kept on ice to avoid evaporation of the material before and between performance of physico-chemical tests.
Key result
Auto-ignition temperature:
415 °C
Atm. press.:
ca. 1 000 hPa

Preliminary test

The estimated auto-ignition temperature was 440°C.

Main study

Ignition of the test item within 5 minutes after introduction was observed with each sample volume and with each test a minimum auto-ignition temperature was obtained. The maximum deviation between the three values was < 20°C. According to the gauidelines, no further testing was required.

The lowest temperature at which ignition of the test item occurred was 419°C. This temperature was rounded down to the nearest multiple of 5°C giving an auto-ignition temperature of the test item of 415°C.

The results of the main study on the determination of the auto-ignition temperature of the test item are given in the following Table.

Test  Volume [µL]  Auto-ignation temperature [°C]  Ignition delay [s]  Colour of the flame  Minimum auto-ignition temperature [°C] 

1

2

3

 

70

150

300

125

225

325

100

200

350 

438

425

426

426

421

430

430

419

434 

12

19

14

19

18

15

19

26

16 

Orange/Blue

Blue

Blue

Blue

Blue

Blue

Blue

Blue

Blue 

425

421

419

 

Conclusions:
The test item, 1,1,1-trifluoroacetone, is auto-ignitable with an auto-ignition temperature of 415°C at approximately 1000 hPa.
Executive summary:

Measurement of the auto-ignition temperature of 1,1,1-trifluoroacetone was performed according to standardised guidelines ( EU A.15, DIN 51794 and IEC 79-4) under GLP conditions, using a commercially auto-ignition temperature apparatus.

The test item, 1,1,1-trifluoroacetone, is auto-ignitable with an auto-ignition temperature of 415°C at approximately 1000 hPa.

Description of key information

The measurement of the auto-ignition temperature was performed according to standardised guidelines ( EU A.15, DIN 51794 and IEC 79-4) under GLP conditions.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
415 °C

Additional information