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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:
27-Oct-2014 to 29-Oct-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): Determination of Ignition Temperature
GLP compliance:
no
Key result
Auto-ignition temperature:
355 °C
Atm. press.:
1 006.7 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 were added into the Erlenmeyer flask at each temperature.

 

Results of the preliminary test

Temperature / °C

Ignition + / -

182

-

235

-

258

-

299

-

308

-

322

-

324

-

354

-

380

+

Atmospheric pressure: 1008.3 – 1013.6 hPa

 

In the preliminary test, the lowest temperature at which an ignition occurred was 380 °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 main test series

1st main test series

1st main test series (cont.)

Temperature / °C

Droplets

Ignition

Temperature / °C

Droplets

Ignition

380

5

+

364

7

-

378

5

+

363

6

-

376

5

+

363

4

+

374

5

+

360

4

-

371

5

+

361

5

-

366

5

+

362

6

-

360

5

-

360

7

-

363

5

-

361

8

-

363

10

-

360

9

-

364

3

-

361

10

-

364

9

-

361

3

-

363

8

-

362

2

-

/

/

/

3611)

1

-

Atmospheric pressure = 1005.3 hPa

   Atmospheric pressure = 1006.0 hPa

1)Atmospheric pressure = 1006.3 hPa

 

Results of second and third main test series

2nd main test series

3rd main test series

Temperature / °C

Droplets

Ignition

Temperature / °C

Droplets

Ignition

365

5

+

365

5

+

362

4

-

363

5

-

362

5

-

363

4

+

363

6

-

360

5

+

362

7

+

358

5

-

359

7

-

357

4

-

359

8

-

358

7

-

359

9

-

357

10

-

359

10

-

357

9

-

360

6

-

358

8

-

358

5

-

358

6

-

359

4

-

357

3

-

359

3

-

357

2

-

360

2

-

357

1

-

360

1

-

/

/

/

Atmospheric pressure = 1006.4 hPa

Atmospheric pressure = 1006.7 hPa

 

The lowest temperatures at which an ignition occurred in the main test 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

363 °C

362 °C

1005.3 – 1006.3 hPa

2

362 °C

360 °C

1006.4 hPa

3

360 °C

358 °C

1006.7 hPa

Atmospheric pressure = 1006.1 hPa

 

According to observations in the three test series the auto-ignition temperature rounded down with an accuracy of 5 °C was determined to be 355 °C.

 

Final results

The test item has an auto-ignition temperature of 355 °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 355 °C (at 1006.7 hPa) was determined for the test substance according to E.U. Method A.15.

Description of key information

Auto-ignition temperature: 355 °C at 1006.7 hPa (EU Method A.15)

Key value for chemical safety assessment

Additional information