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Physical & Chemical properties

Auto flammability

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Reference
Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
12-Nov-2014 to 13-Nov-2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Qualifier:
according to guideline
Guideline:
other: DIN 51794 (2003)
GLP compliance:
no
Key result
Auto-ignition temperature:
240 °C
Atm. press.:
> 999.9 - < 1 000.6 hPa
Remarks on result:
other:

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 we added into the Erlenmeyer flask at each temperature.

 

Results of the preliminary test

 

Preliminary test

Temperature / °C

335

311

292

267

253

238

Ignition + / -

+

+

+

+

+

-

Atmospheric pressure: 992.3 hPa

 

In the preliminary test, the lowest temperature at which an ignition occurred was 253 °C.

 

Main test

The results of the three test series are given in the following tables. An “ignition” is indicated by + and “no ignition” by -.

 

Results of first test series

Temperature / °C

Droplets

Ignition

257

5

+

254

5

+

251

10

+

249

5

+

246

5

+

244

5

-

244

10

+

241

10

-

241

5

-

242

3

-

241

9

-

242

8

-

241*

7

-

242*

6

-

242*

4

-

241*

2

-

242*

1

-

Atmospheric pressure = 999.9 hPa

*Atmospheric pressure = 1000.3 hPa

 

Results of second test series

Temperature / °C

Droplets

Ignition

244

10

+

242

10

-

242

9

-

242

8

-

241

7

-

242

6

-

242

5

-

242

4

-

242

3

-

242

2

-

242

1

-

Atmospheric pressure = 1000.2 hPa

 

Results of third test series

Temperature / °C

Droplets

Ignition

244

10

+

242

10

-

241

9

-

242

8

-

241

7

-

242

6

-

241

5

-

242

4

-

241

3

-

242

2

-

243

1

-

Atmospheric pressure = 1000.6 hPa

 

The lowest temperatures at which an ignition occurred in the test series are given in the table below.

 

The lowest temperatures at which an ignition occurred

Test series number

Lowest temperatures of an ignition (°C)

Highest temperatures without an ignition (°C)

Atmospheric Pressure (hPa)

1

244

242

999.9 – 1000.3

2

244

242

1000.2

3

244

243

1000.6

According to observations in the three test series the auto-ignition temperature rounded down with an accuracy of 5 °C was determined to be 240 °C.

 

Final results

The test item has an auto-ignition temperature of 240 °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 240 °C at 999.9 – 1000.6 hPa was determined for the test substance according to E.U. Method A.15.

Description of key information

Auto-ignition temperature: 240 °C at 999.9 – 1000.6 hPa (EU Method A.15)

Key value for chemical safety assessment

Additional information

An auto-ignition temperature value of 240 °C at 999.9 – 1000.6 hPa was determined for the test substance according to E.U. Method A.15.