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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2015
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
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
Qualifier:
according to guideline
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Deviations:
no
GLP compliance:
yes
Auto-ignition temperature:
280 °C
Remarks on result:
preliminary test
Auto-ignition temperature:
260 °C
Atm. press.:
>= 1 001.8 - <= 1 005 hPa
Remarks on result:
other: Definitive Test (minimum auto-ignition temperature) in triplicate

Preliminary test

The estimated auto-ignition temperature was 265°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 250°C. This temperature was a multiple of 5°C and therefore given as the auto-ignition temperature of the test substance.

 

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

277

26

orange/yellow

264

 

160

264

62

orange/yellow

 

 

320

267

55

orange/yellow

 

2

100

272

36

orange/yellow

265

 

250

265

58

orange/yellow

 

 

400

270

46

orange/yelllow

 

3

90

273

39

orange/yellow

264

 

200

264

53

orange/yellow

 

 

350

267

46

orange/yellow

 

Conclusions:
The auto-ignition temperature of the test item was determined to be 260 °C at 1012 and 1027 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 264°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 1001.8 and 1005.0 hPa.

Description of key information

Auto-ignition temperature: 260 °C at ca. 1 atmosphere, EU Method A.15, 2015

Key value for chemical safety assessment

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

Additional information

Key Study : EU Method A.15, 2015 : 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 264°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 1001.8 and 1005.0 hPa.