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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:
30-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)
GLP compliance:
no
Key result
Auto-ignition temperature:
260 °C
Atm. press.:
1 013.5 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 we added into the Erlenmeyer flask at each temperature.

 

Results of the preliminary test using the semi-automated apparatus ZT1

Temperature / °C

265

282

303

Ignition + / -

-

-

+

Atmospheric pressure: 1012.1 hPa

 

In the preliminary test, the lowest temperature at which an ignition occurred was 303 °C.

 

Main test

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

 

Determination of the first main test series using the semi-automated apparatus ZT2

1st main test series

Temperature / °C

Droplets

Ignition

261

10

+

259

10

-

258

9

-

259

8

-

258

7

-

259

6

-

258

5

-

257

4

-

258

3

-

258

2

-

258

1

-

Atmospheric pressure = 1013.5 hPa

 

Determination of the second and third main test series using the semi-automated apparatus ZT2

2nd main test series

3rd main test series

Temperature / °C

Droplets

Ignition

Temperature / °C

Droplets

Ignition

261

10

+

264

10

+

259

10

-

262

10

-

258

9

-

263

9

-

258

8

-

262

8

-

259

7

-

263

7

-

258

6

-

262

6

-

258

5

-

262

5

-

259

4

-

262

4

-

259

3

-

262

3

-

259

2

-

262

2

-

259

1

-

262

1

-

Atmospheric pressure = 1013.5 hPa

Atmospheric pressure = 1013.5hPa

 

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

Highest temperatures without an ignition

Atmospheric Pressure

1

261 °C

259 °C

1013.5 hPa

2

261 °C

259 °C

1013.5 hPa

3

264 °C

263 °C

1013.5 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 260 °C.

 

Final results

The test item has an auto-ignition temperature of 260 °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 260 °C (at 1013.5 hPa) was determined for the test substance according to E.U. Method A.15.

Description of key information

Auto-ignition temperature: 260 °C at 1013.5 hPa (EU Method A.15)

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
260 °C

Additional information

An auto-ignition temperature value of 260 °C (at 1013.5 hPa) was determined for the test substance according to E.U. Method A.15.