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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:
23-07-2019 to 13-08-2019
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study performed under GLP. All relevant validity criteria were met.
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
Qualifier:
according to
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Deviations:
no
GLP compliance:
yes
Auto-ignition temperature:
275 °C
Atm. press.:
1 010 hPa
Remarks on result:
preliminary test
Auto-ignition temperature:
260 °C
Atm. press.:
>= 1 010 - <= 1 015 hPa
Remarks on result:
other: Definitive Test (minimum auto-ignition temperature) in triplicate

Preliminary test

The estimated auto-ignition temperature was 275°C.

 

Main study

Ignition of the test substance 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 < 10°C. According to the guidelines, no further testing was required. The lowest temperature at which ignition of the test substance occurred was 262°C. This temperature was rounded down to the nearest multiple of 5°C giving an auto-ignition temperature of the test item of 260°C.

 

Table 1. Auto-ignition of the test item

Test

Volume


[μL]

Auto-ignition
temperature

[°C]

Ignition delay



[s]

Colour of the flame

Minimum auto-ignition
temperature
[°C]

1

70

273

40

orange/blue

262

 

120

268

43

 

 

 

170

267

49

 

 

 

230

262

68

 

 

 

320

265

74

 

 

2

200

264

66

orange/blue

263

 

270

263

88

 

 

 

360

264

61

 

 

3

100

269

43

orange/blue

262

 

300

262

66

 

 

 

400

263

69

 

 

Conclusions:
The auto-ignition temperature of the test item was determined to be 260 °C at 1010 and 1015 hPa.
Executive summary:

The auto-ignition temperature was determined using EU Method A.15 under GLP. The auto-ignition temperature is the lowest temperature at which the test item will ignite when mixed with air under the conditions defined in the test method. 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 < 10°C. According to the guidelines, no further testing was required. The lowest temperature at which ignition of the test item occurred was 262°C. This temperature was rounded to the lowest multiple of 5°C and therefore 260°C was given as the auto-ignition temperature of the test item. Under the conditions of the study, the auto-ignition temperature was determined to be 260 °C at 1010 and 1015 hPa.

Description of key information

Auto-ignition temperature: 260 °C at ca. 1 atmosphere, EU Method A.15, 2019

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
260 °C

Additional information

Key study : EU Method A.15, 2019 : The auto-ignition temperature was determined using EU Method A.15 under GLP. The auto-ignition temperature is the lowest temperature at which the test item will ignite when mixed with air under the conditions defined in the test method. 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 < 10°C. According to the guidelines, no further testing was required. The lowest temperature at which ignition of the test item occurred was 262°C. This temperature was rounded to the lowest multiple of 5°C and therefore 260°C was given as the auto-ignition temperature of the test item. Under the conditions of the study, the auto-ignition temperature was determined to be 260 °C at 1010 and 1015 hPa.