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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:
2018-06-08 to 2018-10-31
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:
yes
Remarks:
Laboratory oven Zündwertprüfer 10-212-000 of the company Coesfeld (volume about 2L) with temperature programming, natural air circulation and explosion pressure relief following DIN EN14522 was used.
GLP compliance:
no
Key result
Auto-ignition temperature:
280 °C
Atm. press.:
1 004.7 mBar

Results

The first and second preliminary test found an auto-ignition temperature of 300 °C, respectively. Atmospheric pressure during the pre-test was 1004.7 mbar.

ln the Table 1 below, the auto-ignition temperatures, ignition delay times and used drops are summarised for the main study.

Table 1: Summary of the test results from the main study

experiment

auto-ignition temperature [°C]

ignition delay time [s]

drops [amount]

first test series (atmospheric pressure 1004.7 mbar)

286.7

30

5

second test series (atmospheric pressure 1004.7 mbar)

287.2

24

5

third test series (atmospheric pressure 1000.5 mbar)

282.7

24

5

The auto-ignition temperature was determined to be 280 °C (lowest out of three and rounded down to a whole multiple of 5 K), whereby ignition occurred after 24 seconds by using five drops. The three lowest values of the main study lay within a range of 5 K (as required for auto-ignition temperatures below 300 °C).

Conclusions:
The auto-ignition of the test item was determined according to EU A.15. and is 280 °C at 1004.7 mbar.
Executive summary:

The auto-ignition of the test item was determined according to EU A.15. and is 280 °C at 1004.7 mbar.

Description of key information

The auto-ignition of the test item was determined according to EU A.15. and is 280 °C at 1004.7 mbar.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
280 °C

Additional information