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Auto flammability

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Reference
Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From June 18 to 21, 2010
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Well described study in accordance with GLP and EU-Method A.15 without any deviation
Reason / purpose for cross-reference:
reference to same study
Reason / purpose for cross-reference:
reference to other study
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Auto-ignition temperature:
280 °C
Atm. press.:
99 049 Pa
Remarks on result:
other: Experiment 1: Ignition delay: 7 seconds
Auto-ignition temperature:
285 °C
Atm. press.:
98 936 Pa
Remarks on result:
other: Experiment 2: Ignition delay: 5 seconds
Auto-ignition temperature:
285 °C
Atm. press.:
99 729 Pa
Remarks on result:
other: Experiment 3: Ignition delay: 6 seconds

Preliminary test: Strong fuming and sizzle was observed at temperatures above 270 °C. At the highest temperature, one pop (taken as sign of ignition) could be perceived. Atmospheric pressure during the pre-test was 98998.

 

Table 1: Pre-Test: Ignition attempts

 

Time

Temperature(Channel 0)

Temperature(Channel 1)

Drops used

Ignition?

Ignition Delay

Observations

 

oC

oC

#

yes/no

seconds

 

09.19

249

249

3

no

--

weak fuming

09.30

272

273

3

no

--

sizzle, strong fuming

09.46

291

291

3

yes

3

sizzle, pop, flame fume

 

Main test: Auto ignition temperatures during test 1, 2 and 3 were observed to be 280, 285 and 285 °C at 99049, 98936 and 99729 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

 

9.56

285

285

3

yes

5

sizzle, pop, flame, fume

10.00

280

280

3

yes

7

sizzle, pop, flame, fume

10.04

275

275

3

no

--

sizzle, weak fuming

10.11

275

275

5

no

--

sizzle, weak fuming

10.19

276

274

7

no

--

sizzle, weak fuming

10.28

278

276

7

no

--

sizzle, weak 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

 

13.29

276

274

3

no

--

sizzle, strong fuming

13.55

279

280

3

no

--

sizzle, strong fuming

14.04

279

280

5

no

--

sizzle, strong fuming

14.12

285

285

3

yes

5

sizzle, pop, flame, fume

14.19

279

281

7

no

--

sizzle, strong fuming

14.27

281

282

7

no

--

sizzle, 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

 

15.38

279

281

3

no

--

sizzle, strong fuming

15.47

284

286

3

yes

6

sizzle, pop, flame, fume

15.52

279

281

5

no

--

sizzle, strong fuming

16.00

279

281

7

no

--

sizzle, strong fuming

16.10

281

283

7

no

--

sizzle, strong fuming

Conclusions:
Under the test conditions, the auto ignition temperature of dimethyloctadiene was determined to be 280 °C.
Executive summary:

A GLP study was conducted to determine the auto flammability of dimethyloctadiene according to EU Method A.15. In the preliminary test, strong fuming and sizzle were observed at temperatures above 270 °C at 98998 Pa. In the main test, auto ignition temperatures during test 1, 2 and 3 were observed to be 280, 285 and 285 °C at 99049, 98936 and 99729 Pa, respectively.

 

Under the test conditions, the auto ignition temperature of dimethyloctadiene was determined to be 280 °C.

Description of key information

 Under the test conditions, the auto ignition temperature of DIMETHYLOCTADIENE was determined to be 280 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
280 °C

Additional information

Key study well described conducted in accordance with GLP and EU-Method A.15 without any deviation. Therefore the result of this key study may be used as the end point value.

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