Registration Dossier

Administrative data

Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Reliability:
1 (reliable without restriction)

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2019
Report Date:
2019

Materials and methods

Test guideline
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Version / remarks:
May 2008 (referring to DIN 51794)
Deviations:
yes
Remarks:
Only uncritical deviations: apparatus refers to DIN 14522 and uses smaller temperature steps.
GLP compliance:
yes (incl. certificate)

Test material

Reference
Name:
Unnamed
Type:
Constituent
Type:
Constituent
Type:
Constituent
Type:
Constituent
Test material form:
liquid: viscous

Results and discussion

Auto-ignition temperature (liquids / gases)
Key result
Auto-ignition temperature:
410 °C
Atm. press.:
996.8 mBar

Any other information on results incl. tables

Pre-test 1

Selected T

T Vessel

Drops used

Ignition?

Observations

°C

°C

#

yes/no

 

200

200.6

5

no

-

300

300.2

5

no

Smoke

400

400.3

5

no

Smoke

500

500.3

5

yes

Plop

Pre-test 2

Selected T*

T Vessel

Drops used

Ignition?

Observations

°C

°C

#

yes/no

 

400

400.1

5

no

Smoke

420

420.4

5

yes

Flame and plop

Result given by the instrument

-

422.14

5

yes after 31 seconds

Flame and plop

Main test

First test series

Selected T

T Vessel

Drops used

Ignition?

Observations

°C

°C

#

yes/no

 

427.1

427.0

5

yes

Flame and plop

422.1

422.2

5

yes

Flame and plop

417.1

417.4

5

no

Smoke

417.1

417.3

7

yes

Flame and plop

415.1

415.1

7

yes

Flame and plop

413.1

413.0

7

yes

Flame and plop

411.1

411.1

7

no

Smoke

411.1

411.0

9

no

Smoke

411.1

411.2

13

no

Smoke

411.1

410.8

5

no

Smoke

Result given by the instrument

-

413.94

7

yes after 42 seconds

Flame and plop

Second test series

Selected T

T Vessel

Drops used

Ignition?

Observations

°C

°C

#

yes/no

 

433.9

433.6

5

yes

Flame and plop

428.9

428.7

5

yes

Flame and plop

423.9

423.8

5

yes

Flame and plop

418.9

419.0

5

no

smoke

418.9

418.9

7

no

smoke

418.9

419.2

9

yes

Flame and plop

416.9

416.8

9

no

smoke

416.9

417.0

13

no

smoke

416.9

416.9

5

no

smoke

416.9

417.1

7

no

smoke

Result given by the instrument

-

419.27

9

yes after 28 seconds

Flame and plop

Third test series

Selected T

T Vessel

Drops used

Ignition?

Observations

°C

°C

#

yes/no

 

439.3

439.2

5

yes

Flame and plop

434.3

434.2

5

yes

Flame and plop

429.3

429.3

5

yes

Flame and plop

424.3

424.6

5

yes

Flame and plop

419.3

419.3

5

yes

Flame and plop

414.3

414.1

5

yes

Flame and plop

409.3

409.4

5

no

smoke

409.3

409.4

7

no

smoke

409.3

409.1

9

no

smoke

409.3

409.5

13

no

smoke

411.7

411.7

5

no

smoke

411.7

411.6

7

no

smoke

411.7

411.8

9

no

smoke

411.7

411.9

13

no

smoke

Result given by the instrument

-

413.73

5

yes after 17 seconds

Flame and plop

Validity control

The requirements for repeatability of the DIN standard are stated as follows: Three lowest values of the main test have to lie within a range of 10 K (if auto ignition temperature is above 300 °C).

The three lowest values of the main test lay within a range of 10 K (as required for auto ignition temperatures above 300 C). The largest difference between measured ignition temperatures was 5 K.

The test has therefore passed the validity criterium.

Interpretation of the results

Experiment

Value (rounded to integer)

Ignition delay

Drops used

First test series

414 °C

42 s

7

Second test series

419 °C

28 s

9

Third test series

414 °C

17 s

5

The lowest value of the auto ignition temperature is 414 °C. This value was determined using 5 respectively 7 drops of test item. The test item showed auto ignition after 17 seconds.

The auto ignition temperature (result of determination) is the lowest value from the lowest values of the three experiments, rounded down to a whole multiple of 5 °C. Therefore, the auto ignition temperature is stated as 410 °C.

Applicant's summary and conclusion

Conclusions:
Auto-ignition temperature: 410°C.
Executive summary:

The auto ignition temperature was determined in three independent determinations. A lowest value of the main test of 414 °C was found. Therefore, the auto-ignition temperature according to EU A.15 (rounded down to a whole multiple of 5 °C) of the test item 'Oligomerisation product obtained by plasma treatment of vegetable oil mono- and polyunsaturated C16-C22 triglycerides' is stated as 410°C.