Petroleum resins

Auto flammability

Link to relevant study record(s)

Reference

Endpoint:

auto-ignition temperature (liquids)

Type of information:

experimental study

Adequacy of study:

key study

Study period:

18. Sep. 2018 to 19. Sep. 2018

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))

Version / remarks:

Commission Regulation (EC) No. 440/2008 of 30. May 2008 published on 31. May 2008, EU-Method A.15 “Auto Ignition Temperature (liquids and gases)“ (referring to DIN 51794 “Bestimmung der Zündtemperatur“, dated May 2003)

Deviations:

yes

Remarks:

See "Any other information" for details

GLP compliance:

yes (incl. QA statement)

Specific details on test material used for the study:

No further details specified in the study report.

Key result

Auto-ignition temperature:

405 °C

Atm. press.:

1 003.1 mBar

Findings

Determination of the viscosity

The test item was visually compared with the standard liquid Viscosity (50 mPa*s).The viscosity of the test item was below 50 mPa/s.

 

Pre-Determination

Ignition range for pre-test 1

Selected T*		T Vessel	Drops used	Ignition?	Observations
°C		°C	#	yes/no
200		199.9	5	no	-
300		300.4		no
400		400.3	5	no	-
500		500.2	5	yes	Plop
Result given by the instrument
-	500.68		5	yes

 

The ignition attempts of the pre-determination program are presented in the following table.

 

Ignition attempts pre-test 2

Selected T*		T Vessel	Drops used	Ignition?	Observations
°C		°C	#	yes/no
400		399.9	5	no	Smoke
420		420.1	5	yes	Plop
Result given by the instrument
-	421.19		5	yes

*The temperature was selected at the Zündwertprüfer 10-212-000 corresponding to an initial oven temperature of400°C. Using a constant heating rate, the subsequent ignition trials were conducted every 20 ± 5 K

Atmospheric pressure during the pre-testwas1000.1mbar.

 

First Test Series

The ignition attempts of the first test series of the main determination are presented in the following table.

Ignition attempts first test series

Selected T*		T Vessel		Drops used		Ignition?		Observations
°C		°C		#		yes/no
426.2		426.4		5		yes		Flame and Plop
421.2		421.4		5		yes		Flame and Plop
416.2		416.2		5		yes		Plop
411.2		411.4		5		yes		Flame and Plop
406.2		406.1		5		no		Smoke
406.2		406.3		7		no		Smoke
406.2		406.0		9		no		Smoke
406.2		406.5		13		no		Smoke
409.0		409.2		5		yes		Plop
407.0		407.1		5		no		Smoke
407.0		407.0		7		no		Smoke
407.0		407.1		9		no		Smoke
407.0		406.8		13		no		Smoke
Result given by the instrument
-	408.83		5		yes after 35 seconds

*The selected temperature was suggested automatically by the instrument.

The ignition trials were conducted on 18. Sep. 2018 (atmospheric pressure during the trials1000.1mbar).

Lowest value of the first test seriesis 408.83 °C, the drops, which needed, are 5 and the time until the ignition was detected, are 35 seconds.

 

Second Test Series

The ignition attempts of the second test series of the main determination are presented in the following table.

Ignition attempts second test series

Selected T*		T Vessel		Drops used		Ignition?		Observations
°C		°C		#		yes/no
428.8		429.0		5		yes		Flame and Plop
423.8		424.1		5		yes		Flame and Plop
418.8		419.0		5		yes		Flame and Plop
413.8		413.9		5		yes		Flame and Plop
408.8		409.0		5		yes		Flame and Plop
403.8		403.8		5		no		Smoke
403.8		404.0		7		no		Smoke
403.8		403.7		9		no		Smoke
403.8		403.9		13		no		Smoke
407.1		407.4		5		yes		Flame and Plop
405.1		405.4		5		no		Smoke
405.1		405.2		7		no		Smoke
405.1		404.9		9		no		Smoke
405.1		405.4		13		no		Smoke
Result given by the instrument
-	407.93		5		yes after 32 seconds

*The selected temperature was suggested automatically by the instrument.

Atmospheric pressure during the trials 1003.1 mBar.

Lowest value of the second test series is 407.93 °C, the drops, which needed, are 5 and the time until the ignition was detected, are 32 seconds.

 

Third Test Series

The ignition attempts of the third test series of the main determination are presented in the following table.

Ignition attempts third test series

Selected T*		T Vessel		Drops used		Ignition?		Observations
°C		°C		#		yes/no
427.9		428.1		5		yes		Flame and Plop
422.9		423.2		5		yes		Flame and Plop
417.9		418.1		5		yes		Flame and Plop
412.9		412.8		5		yes		Flame and Plop
407.9		408.1		5		yes		Flame and Plop
402.9		403.1		5		no		Smoke
402.9		403.0		7		no		Smoke
402.9		402.7		9		no		Smoke
402.9		403.4		13		no		Smoke
406.3		406.5		5		no		Smoke
406.3		406.2		7		no		Smoke
406.3		406.0		9		no		Smoke
406.3		405.8		13		no		Smoke
Result given by the instrument
-	408.33		5		yes after 45 seconds

*The selected temperature was suggested automatically by the instrument.

Atmospheric presure during the trials 1002.1 mBar.

Lowest value of the third test series is 408.33 °C, the drops, which needed, are 5 and the time until the ignition was detected, are 45 seconds.

 

Result

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 following lowest values were recorded:

Lowest Values Main Test

Experiment	Value (rounded to integer)	Ignition delay	Drops used
First test series	409 °C	35 s	5
Second test series	408 °C	32 s	5
Third test series	408 °C	45 s	5

 

The lowest value of the auto ignition temperature is 408 °C. This value was determined using 5 drops test item. The test item showed auto ignition after 32 and 45 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 405 °C.

Conclusions:

The lowest value of the auto ignition temperature is 408 °C. This value was determined using 5 drops test item. The test item showed auto ignition after 32 and 45 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 405 °C.

Executive summary:

Determination of the auto ignition temperature of Petroleum Resins (Kendex 0897) according to EU A.15

 

Findings and Results:

The auto ignition temperature was determined in three independent determinations. The lowest value of 408 °C was found in the main test.

Therefore, the auto-ignition temperature according to EU A.15 (rounded down to a whole multiple of 5 °C) of Petroleum Resins (Kendex 0897) is stated as 405 °C.

Description of key information

The auto-ignition temperature according to EU A.15 (rounded down to a whole multiple of 5 °C) of Petroleum Resins (Kendex 0897) is stated as 405 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

405 °C

Additional information

The auto ignition temperature was determined in three independent determinations. The lowest value of 408 °C was found in the main test.

Therefore, the auto-ignition temperature according to EU A.15 (rounded down to a whole multiple of 5 °C) of Petroleum Resins (Kendex 0897) is stated as 405 °C.