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Auto flammability

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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
20 October 2011 - 23 February 2012
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other:
Remarks:
Thermal degradation of the test substance starts at 250 °C (see DSC and TGA diagrams).
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Version / remarks:
31 May 2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Version / remarks:
May, 2003
Deviations:
no
Qualifier:
according to guideline
Guideline:
IEC 60079-4 (Electrical apparatus for explosive gas atmospheres. Part 4: Method of test for ignition temperature)
Version / remarks:
1975
Deviations:
no
GLP compliance:
yes
Key result
Auto-ignition temperature:
ca. 400 °C
Atm. press.:
>= 1 035.4 - <= 1 039.4 hPa

Preliminary test:

The estimated auto-ignition temperature was 405 °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 403 °C. This temperature was rounded off to the nearest multiple of 5 °C giving an auto-ignition temperature of the test substance of 400 °C.

Test Volume [microL] Auto-ignition temp. [°C]

Ignition delay

[s]

Colour of the flame  Min. auto-ignition temp. [°C]
1 70 405 5 yellow 403
100 404 6 yellow
150 403 6 yellow
250 410 7 yellow
2 50 413 5 yellow 410
130 410 6 yellow
300 417 4 yellow
3 60 419 5 yellow 410
90 410 5 yellow
140 412 5 yellow
270 415 4 yellow

Description of key information

The auto-ignition temperature of the substance is 400 °C at 1035.4 – 1039.4 hPa (EC A.15).

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
400 °C

Additional information

The test substance is auto-ignitable.