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Auto flammability

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Reference
Endpoint:
auto-flammability
Type of information:
experimental study
Adequacy of study:
key study
Study period:
20-11-2015
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
Qualifier:
according to guideline
Guideline:
DIN EN 14522, Method P (Determination of the auto ignition temperature of gases and vapours)
Deviations:
no
GLP compliance:
no
Key result
Auto-ignition temperature:
340 °C
Atm. press.:
>= 1 012.3 - <= 1 013.3 hPa

Results of the preliminary test using the semi-automated apparatus ZT3:

  Preliminary test
Temperature/ °C 351 370 360 355
Ignition / +/- - + + + 
  Atmospheric pressure: 1013.5 hPa

In the preliminary test, an ignition was observed at 355°C.

Determination of the first main test series using the semi-automated apparatus ZT3:

1st Main test series 1st Main test series (cont'd)
Temperature / °C Drops Ignition/ +/- Temperature / °C Drops Ignition/ +/-
350 5 + 343 6 -
348 5 + 343 5 -
346 5 - 343 4 +
345 6 - 341 4 -
345 4 - 340 5 -
345 3 - 341 6 -
345 2 - 341 7 -
346 1 - 341 8 -
346 7 + 340 9 -
343 7 - 341 10 -
343 8 - 341 3 -
343 9 - 341 2 -
343 10 - 342 1 -
Atmospheric pressure: 1012.3 - 1013.3 hPa

Determination of the second and the third main test series using the semi-automated apparatus ZT3:

2nd Main test series 3rd Main test series (cont'd)
Temperature / °C Drops Ignition/ +/- Temperature / °C Drops Ignition/ +/-
356 5 + 355 10 -
354 5 + 354 4 -
351 6 - 359 4 +
351 5 - 356 6 -
351 4 + 356 10 -
348 5 - 355 9 -
348 7 - 356 8 -
348 6 - 355 7 -
348 3 - 355 5 -
348 1 - 356 4 -
348 2 - 356 3 -
348 8 - 355 2 -
348 9 - 355 1 -
348 4 - - - -
348 10 - - - -
Atmospheric pressure: 999.4 hPa Atmospheric pressure: 1004.6 hPa

4. Lowest temperature at which an ignition occured:

Main test series Lowest temperatures of an ignition Highest temperatures without an ignition Atmospheric Pressure
1 343°C 341°C 1012.3 - 1013.3 hPa
2 351°C 348°C 999.4 hPa
3 358°C 356°C 1004.6 hPa

Based on the results of the main test series, the lowest auto-ignition temperature was 343°C

According to EC No. 440/2008 and DIN 51794 the guideline the auto-ignition temperature rounded down to the nearest multiple of 5°C was determined as 340°C.

Conclusions:
The test item has an auto-ignition temperature of 340 °C.
Executive summary:

In the current study the auto-ignition temperature of the test item was assessed according to the Regulation EC No. 440/2008 Method A.15. Auto-Ignition Temperature (Liquids and Gases). In total 2 replicate measurements were performed. The test item has an auto-ignition temperature of 340 °C.

Description of key information

The auto-ignition temperature of the test item was determined to be 340 °C.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
340 °C

Additional information

In a recent study the auto-ignition temperature of the test item was assessed according to the Regulation EC No. 440/2008 Method A.15. Auto-Ignition Temperature (Liquids and Gases). The test item has an auto-ignition temperature of 340 °C.