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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:
12-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:
215 °C
Atm. press.:
ca. 992.3 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

 

 

 

 

Preliminary test

Temperature / °C

329

307

282

259

234

226

212

Ignition + / -

+

+

+

+

+

+

-

 

Atmospheric pressure = 992.3 hPa  

In the preliminary test, the lowest temperature at which an ignition occurred was 226 °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

226

5

+

224

10

+

222

10

+

219

10

+

217

10

+

214

10

-

215

9

-

215

8

-

214

7

-

215

6

-

214

5

-

215

4

-

214*

3

-

216*

2

-

215*

1

-

Atmospheric pressure = 993.0 hPa

*atmospheric pressure = 992.8 hPa

 

 

Results of second test series

Temperature / °C

Droplets

Ignition

216

10

+

214

10

-

215

9

-

214

8

-

213

7

-

214

6

-

213

5

-

214

4

-

214

3

-

215

2

-

213

1

-

Atmospheric pressure = 992.8 hPa

 

Results of third test series

Temperature / °C

Droplets

Ignition

216

10

+

213

10

-

214

9

-

213

8

-

214

7

-

214

6

-

215

5

-

213

4

-

213

3

-

214

2

-

215

1

-

Atmospheric pressure = 993.2 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

Highest temperatures without an ignition

Atmospheric Pressure

1

217

216

993.0 – 992.8 hPa

2

216

215

992.8 hPa

3

216

215

993.2 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 215 °C.

 

Final results

The test item has an auto-ignition temperature of 215 °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 of 215 °C at 992.3 hPa was determined for the test substance according to E.U. Method A.15.

Description of key information

Auto-ignition temperature: 215 °C at ca. 992.3 hPa (EU Method A.15)

Key value for chemical safety assessment

Additional information