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Physical & Chemical properties

Auto flammability

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Reference
Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
From June 02, 2012 to August 21, 2012
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Deviations:
no
Qualifier:
according to
Guideline:
other: Deutsches Institut für Normung (DIN), DIN Guide 51794: "Determining the Ignition Temperature of Petroleum Products", May 2003.
Deviations:
not specified
Qualifier:
according to
Guideline:
other: International Electrotechnical Commission (IEC), IEC standard 79-4: "Electrical Apparatus for Explosive Gas Atmospheres, Part 4, Method of Test for Ignition Temperature", 1975.
Deviations:
not specified
GLP compliance:
yes
Remarks:
(OECD GLP)
Key result
Auto-ignition temperature:
350 °C
Atm. press.:
1 014.3 - 1 017.4 hPa

Preliminary test

The estimated auto-ignition temperature was 390°C.

 

Main study

The results of the main study on the determination of the auto-ignition temperature of the test substance are given in the below Table.

 

Ignition of the test substance 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 substance occurred was 354°C. This temperature was rounded down to the nearest multiple of 5°C giving an auto-ignition temperature of the test substance of 350°C.

Table: Main study –auto-ignition temperature of the test substance

Test

Volume


[μl]

Auto-ignition
temperature

[°C]

Ignition delay



[s]

Colour of the flame

Minimum auto-ignition
temperature
[°C]

 

 

 

 

 

 

1

70

391

15

yellow/blue

354

 

150

372

15

yellow/blue

 

 

250

362

21

yellow/blue

 

 

400

354

24

yellow/blue

 

 

700

365

24

yellow/blue

 

 

 

 

 

 

 

2

200

371

17

yellow/blue

362

 

350

362

22

yellow/blue

 

 

650

369

26

yellow/blue

 

 

 

 

 

 

 

3

100

388

14

yellow/blue

366

 

450

366

20

yellow/blue

 

 

600

367

20

yellow/blue

 

 

 

 

 

 

 

 


Conclusions:
Under the conditions of the study, the auto-ignition temperature of the test substance was determined to be 350°C at 1014.3 – 1017.4 hPa.
Executive summary:

A study was conducted to determine the auto-ignition temperature of the test substance according to EU Method A.15, DIN Guideline 51794 and IEC Standard 79-4. Under the conditions of the study, the auto-ignition temperature of the test substance was determined to be 350°C at 1014.3 – 1017.4 hPa (Baltussen, 2017).

Description of key information

The auto-ignition temperature was determined according to EU Method A.15, DIN Guideline 51794 and IEC Standard 79-4 (Baltussen, 2017). 

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
350 °C

Additional information