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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
16-09-2013 to 18-10-2013
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:
270 °C
Remarks on result:
preliminary test
Auto-ignition temperature:
255 °C
Atm. press.:
>= 997.5 - <= 1 002.9 hPa
Remarks on result:
other: Definitive Test (minimum auto-ignition temperature) in triplicate

Preliminary test

The estimated auto-ignition temperature was 270°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 257°C. This temperature was rounded down to 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

269

35

Orange/Blue

257

 

150

260

59

Orange/Blue

 

 

250

257

62

Orange/Blue

 

 

400

264

33

Orange/Blue

 

2

120

270

22

Orange/Blue

263

 

200

263

43

Orange/Blue

 

 

350

266

31

Orange/Blue

 

3

100

263

30

Orange/Blue

262

 

220

262

41

Orange/Blue

 

 

380

267

27

Orange/Blue

 

 

 

 

 

 

 

Conclusions:
The auto-ignition temperature of the test item was determined to be 255 °C at 997.5 and 1002.9 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 257°C. This temperature was rounded to the lowest multiple of 5°C and therefore 255°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 255 °C at 997.5 and 1002.9 hPa.

Description of key information

Auto-ignition temperature: 255 °C at ca. 1 atmosphere, EU Method A.15, 2014

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
255 °C

Additional information

Key study : EU Method A.15, 2014 : 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 257°C. This temperature was rounded to the lowest multiple of 5°C and therefore 255°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 255 °C at 997.5 and 1002.9 hPa.