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Physical & Chemical properties

Auto flammability

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Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
26 August 2013 to 02 September 2013
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Qualifier:
according to guideline
Guideline:
EU Method A.15 (Auto-Ignition Temperature (Liquids and Gases))
Principles of method if other than guideline:
Not applicable
GLP compliance:
no
Auto-ignition temperature:
375 °C
Atm. press.:
ca. 101 325 Pa

Table 4.12/1: Ignition time for the test substance

































































Temperature (°C)



Injected sample amount



Ignition delay (s)



100µl



200µl



300µl



400µl



320



-



-



-



-



-



400



+



 



 



 



3



379



+



 



 



 



6



359



-



-



-



-



-



369



-



-



-



-



-



374



-



-



-



-



-



 


+: Positive response (flame, blast or deflagration)


-: Negative response (nothing or smoke only in a delay of 300 seconds)


 


The lowest temperature giving a positive effect was 379 °C. The injected volume was 100 µl, the ignition delay was 6 s. At a temperature of 374 °C no ignition was observed. Therefore, after rounding-off to the next-lower multiple of 5°C, auto-Ignition temperature of test substance is 375 ± 10 °C.

Conclusions:
This parameter/method is not relevant for classification; however the information is useful regarding process safety and potential additional fire hazard.
No particular hazard is anticipated in normal conditions of storage.
Executive summary:

The auto-ignition temperature of the test item has been determined according to DIN 51794 method (listed in EU A15 guideline), and under GLP.


Aliquots of test item (tested as received) were injected into the flask using a syringe and the flask
was observed for signs of ignition over a 300 second period. This procedure was repeated, varying the sample size, as necessary, until the lowest temperature at which ignition, if any, occurred within 300 seconds of insertion, was determined.


The test item has been determined to have an auto-ignition temperature of 375°C.

Description of key information

Experimental auto-ignition temperature = 375°C (at ca normal atmP). (DIN 51794, non-GLP)


No particular hazard is anticipated in normal conditions of storage.

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
375 °C

Additional information

A fully reliable experimental study, conducted according to a recognized DIN/EU method and under GLP, is available. It is considered as a key study, and the result is retained as key data.
This parameter is not relevant for classification, however the information is useful regarding process safety and potential additional fire hazard.