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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
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 (incl. certificate)
Remarks:
inspected: September 2015; signature: November 2015
Auto-ignition temperature:
265 °C
Atm. press.:
1 012 hPa
Remarks on result:
preliminary test
Auto-ignition temperature:
250 °C
Atm. press.:
>= 1 012 - <= 1 027 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

267

49

yellow/orange/blue

252

 

150

259

96

yellow/orange/blue

 

 

250

254

169

orange/blue

 

 

450

253

176

orange/blue

 

 

700

253

167

orange/blue

 

 

1000

252

213

orange/blue

 

2

200

259

118

orange/blue

250

 

600

254

184

orange/blue

 

 

900

250

276

orange/blue

 

3

300

258

146

orange/blue

252

 

550

255

196

orange/blue

 

 

850

252

239

orange/blue

 

Conclusions:
The auto-ignition temperature of the substance 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 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. Under the conditions of the study, the auto-ignition temperature was determined to be 250 °C at 1012 and 1027 hPa.

Description of key information

Auto-ignition temperature: 250 °C at ca. 1 atmosphere, EU Method A.15, 2017

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
250 °C

Additional information

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 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. Under the conditions of the study, the auto-ignition temperature was determined to be 250 °C at 1012 and 1027 hPa.