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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:
26 Nov - 03 Dec 2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Version / remarks:
2008
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
Key result
Auto-ignition temperature:
235 °C
Atm. press.:
1 017.6 hPa

Results

Preliminary test

An approximate value of the ignition temperature of the test item was first determined in a preliminary test. Results are given in the table below. An “ignition” is indicated by + and “no ignition” by -. Five drops were added into the Erlenmeyer flask at each temperature.

 

Results of the preliminary test 

Preliminary Test

Temperature / °C

Ignition / +/-

306

+

285

+

265

+

244

+

224

-

234

-

239

-

Atmospheric pressure: 1004.1 - 1008.6 hPa

 

In the preliminary test, the lowest temperature at which an ignition occurred was 244 °C.

 

Main test

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

Results of third test series

Main test series

Lowest temperatures of an ignition

Highest temperatures without an ignition

Atmospheric Pressure

1

244 °C

242 °C

1017.6 hPa

2

236 °C

234 °C

1017.6 hPa

3

238 °C

236 °C

1017.6 hPa

 

Based on the results of the main test series, the lowest auto-ignition temperature was 236 °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 235 °C.

 

Final results

The test item has an auto-ignition temperature of 235 °C according to 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 235 °C (at 1017.6 hPa) was determined for the test item according to E.U. Method A.15.

Description of key information

Auto-ignition temperature: 235 °C at 1017.6 hPa (EU Method A.15)

Key value for chemical safety assessment

Additional information