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Auto flammability

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Reference
Endpoint:
auto-ignition temperature (gases)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
06 - 18 Apr 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reference:
Composition 0
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Qualifier:
according to
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Version / remarks:
2003
Qualifier:
according to
Guideline:
other: DIN EN 14522: Determination of the Ignition Temperature of gases and liquids
Version / remarks:
2005
GLP compliance:
no
Test material information:
Composition 1
Key result
Auto-ignition temperature:
260 °C
Atm. press.:
>= 1 009.7 - <= 1 011.8 hPa

Preliminary Test

An approximate value of the ignition temperature of the test item was first determined by a preliminary test. The following table summarizes the results of the preliminary test. An “ignition” is indicated as “+” and “no ignition” as “-“. 5 drops were added into the Erlenmeyer flask at each temperature.

 

 

Preliminary test

Temperature / °C

202

253

300

291

281

270

Ignition / +/-

-

-

+

+

+

-

 

Atmospheric pressure: 1013.5 hPa

 

In the preliminary test, an ignition was observed at 281 °C.

 

Main Test

The lowest temperatures at which an ignition occurred in the main tests are given in the following table.

 

Main test series

Lowest temperatures of an ignition

Highest temperatures without an ignition

Atmospheric Pressure

1

265 °C

262 °C

1012.5 - 1014.0 hPa

2

261 °C

258 °C

1009.7 - 1011.8 hPa

3

262 °C

259 °C

1010.2 hPa

 

Based on results of the main test series, the lowest auto-ignition temperature was 261 °C.

 

Regulation EC No. 440/2008 and DIN 51794: The auto-ignition temperature rounded down to the nearest multiple of 5 °C was determined as 260 °C.

For information:

DIN EN 14522: The auto-ignition temperature reduced by 1.5 % and rounded to the nearest integer temperature was determined as 257 °C.

Final Results

The test item has an auto-ignition temperature of 260 °C according to the Regulation EC No. 440/2008 Method A.15. Auto-Ignition Temperature (Liquids and Gases) and DIN 51794 (2003): Determination of Ignition Temperature.

Conclusions:
An auto-ignition temperature value of 260 °C (at 1009.7 - 1011.8 hPa) was determined for the test item according to E.U. Method A.15.

Description of key information

Auto-ignition temperature: 260 °C at 1009.7 - 1011.8 hPa (EU Method A.15)

Key value for chemical safety assessment

Additional information