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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:
From June 15 to 17, 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Well described study conducted in accordance with GLP and EU-Method A.15 without any deviation
Reason / purpose:
reference to same study
Reason / purpose:
reference to other study
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
Principles of method if other than guideline:
Not applicable
GLP compliance:
yes (incl. certificate)
Auto-ignition temperature:
255 °C
Atm. press.:
99 522 Pa
Remarks on result:
other: Experiment 1: Ignition delay: 85 seconds
Auto-ignition temperature:
257 °C
Atm. press.:
99 663 Pa
Remarks on result:
other: Experiment 2: Ignition delay: 78 seconds
Auto-ignition temperature:
252 °C
Atm. press.:
99 353 Pa
Remarks on result:
other: Experiment 3: Ignition delay: 67 seconds
Key result
Auto-ignition temperature:
ca. 250 °C
Atm. press.:
ca. 101 325 Pa
Remarks on result:
other: mean of the results of 3 experiments

Preliminary test: Fuming was observed at all measurements. At the highest temperature, one pop (taken as sign of ignition) could be perceived. Atmospheric pressure during the pre-test was 99482.

Table 1: Pre-Test: Ignition attempts

 

Time

Temperature(Channel 0)

Temperature(Channel 1)

Drops used

Ignition?

Ignition Delay

Observations

 

oC

oC

#

yes/no

seconds

 

09.52

276

278

1

no

--

fume

10.01

301

301

1

no

--

fume

10.09

319

320

1

yes

4

pop, flame, fume

 

Main test: Auto ignition temperatures during test 1, 2 and 3 were observed to be 255, 257 and 252 °C at 99522, 99663 and 99353 Pa, respectively.

 

Table 2: Main study: Experiment 1

 

Time

Temperature (Channel 0)

Temperature (Channel 1)

Drops used

Ignition?

Ignition Delay

Observations

 

oC

oC

#

yes/no

seconds

 

13.33

315

315

1

no

--

strong fuming

13.51

319

320

1

yes

7

pop, flame, fume

14.00

314

316

2

yes

4

pop, flame, fume

14.05

309

311

2

yes

7

pop, flame, fume

14.10

304

306

2

yes

4

pop, flame, fume

14.15

299

301

2

yes

10

pop, flame, fume

14.23

294

296

2

yes

11

pop, flame, fume

14.31

289

291

2

no

--

Strong fuming

14.47

289

290

3

yes

13

pop, flame, fume

14.53

285

285

3

yes

16

pop, flame, fume

15.01

280

280

3

yes

23

pop, flame, fume

15.07

276

274

3

yes

32

pop, flame, fume

15.12

271

269

3

yes

41

pop, flame, fume

15.18

266

264

3

no

--

strong fuming

15.24

266

264

4

no

--

strong fuming

15.32

266

264

5

yes

50

pop, flame strong fuming

15.37

261

259

5

no

--

strong fuming

15.44

260

260

6

no

--

strong fuming

15.51

261

259

7

yes

52

pop, flame strong fuming

09.15

256

254

7

yes

85

pop, flame strong fuming

09.28

250

250

7

no

--

strong fuming

09.39

249

250

8

no

--

strong fuming

09.48

249

250

6

no

--

strong fuming

09.56

251

252

6

no

--

strong fuming

 

Table 3: Main study: Experiment 2

 

Time

Temperature (Channel 0)

Temperature (Channel 1)

Drops used

Ignition?

Ignition Delay

Observations

 

oC

oC

#

yes/no

seconds

 

11.07

249

250

7

no

--

strong fuming

11.34

255

255

7

no

--

strong fuming

11.43

260

260

7

yes

66

pop, flame, strong fuming

11.55

256

254

8

no

--

strong fuming

12.15

256

254

9

no

--

strong fuming

12.25

258

256

9

yes

78

pop, flame, strong fuming

 

Table 4: Main study: Experiment 3

 

Time

Temperature (Channel 0)

Temperature (Channel 1)

Drops used

Ignition?

Ignition Delay

Observations

 

oC

oC

#

yes/no

seconds

 

13.49

251

252

9

yes

67

pop, flame, strong fuming

13.56

246

248

9

no

--

strong fuming

14.20

246

247

10

no

--

strong fuming

14.30

247

247

11

no

--

strong fuming

14.43

249

248

11

no

--

strong fuming

Conclusions:
The auto ignition temperature of the test item was determined to be 250 °C.
Executive summary:

A GLP study was conducted to determine the auto flammability of the test item according to EU Method A.15. In the preliminary test, fuming was observed at temperatures above 276 °C at 99482. In the main test, auto ignition temperatures during test 1, 2 and 3 were observed to be 255, 257 and 252 °C at 99522, 99663 and 99353 Pa, respectively.

 

The auto ignition temperature of the test item was determined to be 250 °C.

Description of key information

The auto ignition temperature of the test item was determined to be 250°C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
250 °C

Additional information

Key study well described conducted in accordance with GLP and EU-Method A.15 without any deviation. Therefore a reliable of 1 is assigned and the result of this key study can be used as key value for chemical safety assessment.