Linseed oil, ester with pentaerythritol

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:

From June 20, 2917 to June 22, 2017

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))

Deviations:

no

Qualifier:

according to guideline

Guideline:

DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Auto-ignition temperature:

390 °C

Atm. press.:

ca. 99.7 kPa

Lowest values mMain test:

Experiment	Value	Ignition delay	Drops used
First test series	391°C	38 s	13
Second test series	391°C	45 s	17
Third test series	396°C	63 s	17

Ignition attempts pre-test:

Selected T*	T Vessel	Drops used	Ignition?	Observations
°C	°C	#	ye/no
300	200.2	5	no	`-
300	223.1	5	no	`-
300	246.5	5	no	`-
300	269	5	no	smoke
300	293.6	5	no	smoke
300	316.9	5	no	smoke
300	341.3	5	no	smoke
300	363.7	5	no	smoke
300	385.7	5	no	smoke
500	403.7	5	no	smoke
500	420.1	5	yes	smoke and plop ignition after 19 s

*The temperature was selected at the ZPA3 corresponding to an initial oven temperature of 200°C. As the test substance showed no ignition at 385.7 °C, a higher temperature was selected

for the subsequent ignition trials corresponding to a new initial oven temperature of 400°C. Using a constant heating rate, the subsequent ignition trials were conducted every 20 ± 5 K.

Atmospheric pressure during the pre-test was 99826 Pa.

Ignition attempts first test series:

Used program	Selected T*	T Vessel	Drops used	Ignition?	Observations
	°C	°C	#	yes/no
H-A1	416	416.3	5	yes	Plop and flame, Ignition after 47 s
H-A1	411	410.9	5	yes	Plop and flame, Ignition after 11 s
H-A1	406	406.2	5	no	Much smoke
H-A1	406	406	9	yes	Plop , Ignition after 18 s
H-A1	401	400.8	9	yes	Plop and small flame, Ignition after 16 s
H-A1	396	396.7	9	no	smoke
H-A1	396	396.7	5	no	smoke
H-A1	396	396.7	13	yes	Plop and flame, Ignition after 59 s
H-A1	391	391	13	yes	Plop and flame, Ignition after 38 s
H-A1	386	387	13	no	smoke
H-A1	386	385.2	9	no	smoke
H-A1	386	385	5	no	smoke
H-A1	386	385.4	17	no	smoke
H-A2	389	388.7	13	no	Much smoke
H-A2	389	388.7	9	no	smoke
H-A2	389	388.7	5	no	smoke
H-A2	389	389	17	no	smoke

*The selected temperature was suggested automatically by the ZPA3.

Atmospheric pressure during the trials 99826 Pa and 99777 Pa.

Lowest value of the first test series is 391°C.

Ignition attempts second test series:

Used program	Selected T*	T Vessel	Drops used	Ignition?	Observations
	°C	°C	#	yes/no
H-A1	396	395.9	13	no	smoke
H-A1	396	396.4	9	no	smoke
H-A1	396	396.1	5	no	smoke
H-A1	396	396.1	17	yes	Plop and flame, Ignition after 39s
H-A1	391	390.8	17	no	Plop Ignition after 45 s
H-A1	386	386.1	17	no	smoke
H-A1	386	386	13	no	smoke
H-A1	386	386.4	9	no	smoke
H-A1	386	386	5	no	smoke
H-A2	389	388.7	17	no	Much smoke
H-A2	389	389.4	13	no	smoke
H-A2	389	389.4	9	no	smoke
H-A2	389	389.4	5	no	smoke

*The selected temperature was suggested automatically by the ZPA3.

Atmospheric pressure during the trials 99777 Pa.

Lowest value of the second test series is 391°C.

Ignition attempts third test series:

Used program	Selected T*	T Vessel	Drops used	Ignition?	Observations
	°C	°C	#	yes/no
H-A1	396	395.6	17	yes	Plop and flame, Ignition after 63 s
H-A1	391	390.4	17	no	smoke
H-A1	391	391	13	no	smoke
H-A1	391	390.7	9	no	smoke
H-A1	391	391	5	no	smoke
H-A2	394	393.8	17	no	smoke
H-A2	394	394.1	13	no	smoke
H-A2	394	394.4	9	no	smoke
H-A2	394	394.6	5	no	smoke

*The selected temperature was suggested automatically by the ZPA3.

Atmospheric pressure during the trials 99777 Pa and 99603 Pa.

Lowest value of the third test series is 396°C.

Conclusions:

Under the study conditions, the auto ignition temperature of the test substance was determined to be 390°C at 99.7 kPa.

Executive summary:

A study was conducted to determine the auto ignition temperature of the test substance, according to EU Method A.15. The auto ignition temperature was determined in three independent determinations. A lowest value of the main test of 391 °C was found therefore, the auto-ignition temperature according to EU A.15 (rounded down to a whole multiple of 5 °C). Under the study conditions, the auto ignition temperature of the test substance was determined to be 390°C at 99.7 kPa (Krebs, 2018).

Description of key information

The auto-ignition temperature of the test substance was determined according to EU Method A.15 and DIN 51794 (Krebs, 2018).

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:

390 °C