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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:
Study initiation date: 2 November 2009 Study completion date: 10 March 2010
Reliability:
1 (reliable without restriction)
Qualifier:
according to
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Version / remarks:
Directive 92/69/EEC, Official Journal L 383 A 1992
Qualifier:
according to
Guideline:
other: DIN 51 794 (covers a temperature range from 75 to 650 °C)
GLP compliance:
yes
Auto-ignition temperature:
385 °C
Atm. press.:
997 hPa

Portions of the test item were brought in by means of a syringe. The time-lag between application and ignition was measured for all tests. After each application of the test item, the test vessel was flushed completely with clean air to be sure to have a clean test vessel after each test. After flushing, a sufficient interval of time was allowed to ensure that the flask temperature is stabilised at the desired test temperature before the next sample was brought in.

In test 1, starting at 460 °C, the temperature was decreased in steps of 5 °C. If no ignition took place any more, although the amount of the injected test item was increased to a maximum of 20 drops, the trials were continued at a temperature 2 °C below the last positive ignition trial. Before the performance of test 2 (starting at 400°C) and test 3 (starting at 410 °C) a new test vessel was used to avoid contamination and systematic errors. The procedure of both tests was similar to test 1.

The measured lowest ignition temperatures of the main test are > 300 °C and do not differ by more than 20 °C, thus the test is satisfactory.

The auto-ignition temperature is defined as the lowest temperature of all single results of the main test, but rounded to multiples of 5 °C.

   Test 1  Test 2  Test 3
 Lowest ignition temperature [°C]  390 395  389 
 Auto-ignition temperature [°C]        385
Conclusions:
Auto-ignition temperature (997 hPa) = 385 °C
Executive summary:

The auto-ignition temperature of the test item was determined according to EU test method A.15 [Directive 92/69/EEC, Official Journal L 383 A 1992] and DIN 51 794.

Auto-ignition temperature: (997 hPa) 385 °C

The test(s) used to generate this report was(were) carried out in compliance with the principles of Good Laboratory Practice (GLP) in accordance with the currently valid German Chemical Substance Act (Chemikaliengesetz – ChemG), the underlying Commission Directive 2004/10/EC of 11 February 2004 and the relevant OECD decision of the council on 26 November 1997 and that the results fully reflect those found in the study. 

Description of key information

The auto-ignition temperature of the test item was determined according to EU test method A.15 [Directive 92/69/EEC, Official Journal L 383 A 1992] and DIN 51 794.

Auto-ignition temperature: (997 hPa) 385 °C

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
385 °C

Additional information