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Physical & Chemical properties

Auto flammability

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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
27 February 2020 to 13 March 2020
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:
4 March 2016
Deviations:
no
Qualifier:
according to guideline
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Version / remarks:
May 2003
Deviations:
no
GLP compliance:
yes
Specific details on test material used for the study:
- Purity/Composition correction factor: No correction factor required
Key result
Auto-ignition temperature:
465 °C
Atm. press.:
>= 1 002 - <= 1 010 hPa

Preliminary Test

The estimated auto-ignition temperature was 470 °C.

Main Study

The results of the main study on the determination of the auto-ignition temperature of the test material are provided in the table below.

Ignition of the test material within 5 minutes after introduction was observed with each sample volume and with each test a minimum auto-ignition temperature was obtained. The maximum deviation between the three values was < 20 °C. According to the guidelines, no further testing was required.

The lowest temperature at which ignition of the test material occurred was 467 °C. This temperature was rounded down to the nearest multiple of 5 °C giving an auto-ignition temperature of the test material of 465 °C.

Auto-ignition Temperature of the Test Material

Test

Volume (µL)

Auto-ignition

temperature (°C)

Ignition

delay (s)

Colour of the

flame

Minimum auto-ignition

temperature (°C)

1

30

501

15

orange

472

70

472

19

orange

150

481

16

orange

2

25

512

8

orange

481

90

481

14

orange

175

492

11

orange

3

40

496

14

orange

467

80

467

26

orange

160

482

21

orange
Conclusions:
Under the conditions of the study the auto-ignition temperature of the test material was determined to be 465 °C at an atmospheric pressure of between 1002 and 1010 hPa.
Executive summary:

The auto-ignition temperature of the test material was investigated in a study which was conducted in accordance with the standardised guidelines EU Method A.15 and DIN 51794, under GLP conditions, using commercially available auto-ignition temperature apparatus.

Under the conditions of the study the auto-ignition temperature of the test material was determined to be 465 °C at an atmospheric pressure of between 1002 and 1010 hPa.

Description of key information

Under the conditions of the study the auto-ignition temperature of the test material was determined to be 465 °C at an atmospheric pressure of between 1002 and 1010 hPa.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
465 °C

Additional information

The auto-ignition temperature of the test material was investigated in a study which was conducted in accordance with the standardised guidelines EU Method A.15 and DIN 51794, under GLP conditions, using commercially available auto-ignition temperature apparatus. The study was awarded a reliability score of 1 in accordance with the criteria set forth by Klimisch et al. (1997).

Under the conditions of the study the auto-ignition temperature of the test material was determined to be 465 °C at an atmospheric pressure of between 1002 and 1010 hPa.