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Diss Factsheets

Physical & Chemical properties

Auto flammability

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Link to relevant study record(s)

Reference
Endpoint:
auto-ignition temperature (liquids)
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2015-11-24 to 2015-12-02
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))
Qualifier:
according to guideline
Guideline:
DIN 51794 (Testing of mineral oil hydrocarbons - Determination of ignition temperature)
Version / remarks:
2003
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Key result
Auto-ignition temperature:
220 °C
Atm. press.:
ca. 1 008 - ca. 1 009 mBar

Preliminary test


 






















































Test No.


 


 



Sample Volume


[µl]



Barometric pressure


[mbar]


 



Temperature


[°C]



Ignition delay[s]



Test result


 



1



150



1009



300



0



Ignition



2



150



1009



280



2



Ignition



3



150



1009



260



3



Ignition



4



150



1009



240



15



Ignition



5



150



1009



220



-



No Ignition



 


Result value from preliminary test series: ignition: 240°C, no ignition: 220°C


 


Main Test


 


First main test series


 






























































































Test No.


 


 



Sample Volume


[µl]



Barometric pressure


[mbar]


 



Temperature


[°C]



Ignition delay[s]



Test result


 



1



150



1009



235



26



Ignition



2



150



1009



230



34



Ignition



3



150



1009



225



-



No Ignition



4



450



1009



225



-



No Ignition



5



450



1009



228



47



Ignition



6



450



1009



226



62



Ignition



7



450



1009



224



65



Ignition



8



450



1009



222



-



No Ignition



9



300



1009



222



-



No Ignition



10



100



1009



222



-



No Ignition



 


Results first main test series: ignition: 224°C, no ignition: 222°C


 


Second main test series


 














































































Test No.


 


 



Sample Volume


[µl]



Barometric pressure


[mbar]


 



Temperature


[°C]



Ignition delay[s]



Test result


 



1



450



1008



224



66



Ignition



2



450



1008



222



-



No Ignition



3



350



1008



222



-



No Ignition



4



250



1008



222



-



No Ignition



5



150



1008



222



-



No Ignition



6



60



1008



222



-



No Ignition



7



400



1008



222



-



No Ignition



8



300



1008



222



-



No Ignition



 


Results second main test: ignition: 224°C, no ignition: 222°C


 


 


Retest


 






























































































Test No.


 


 



Sample Volume


[µl]



Barometric pressure


[mbar]


 



Temperature


[°C]



Ignition delay[s]



Test result


 



1



450



1008



224



65



Ignition



2



450



1008



222



-



No Ignition



3



400



1008



222



-



No Ignition



4



300



1008



222



-



No Ignition



5



200



1008



222



-



No Ignition



6



100



1008



222



-



No Ignition



7



250



1008



222



-



No Ignition



8



350



1008



222



-



No Ignition



9



150



1008



222



-



No Ignition



10



60



1008



222



-



No Ignition



 


Results restest: ignition: 224°C, no ignition: 222°C


 


Evaluation


 






















Lowest value from pretest:



240°C



Lowest value for first main test:



224°C



Lowest value for second main test:



224°C



Lowest value for retest:



224°C



 


Lowest value of all main test/retest series: 224°C


 


Correction of the temperature according to the test DKD calibration (06/2015) of the temperature measurement chain (thermocouple + monitor) is already considered (value of -0.5°C).

Conclusions:
An auto-ignition temperature of 220°C at 1008-1009 mbar was determined for the substance using the relevant test method and in compliance with GLP. The result is considered to be reliable.

Description of key information

Auto-ignition temperature: 220°C at 1008 -1009 mBar (DIN 51794)

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
220 °C

Additional information

An auto-ignition temperature value of 220°C at 1008-1009 mBar was determined for the substance using a relevant test method according to DIN 51794 and in compliance with GLP. The result is considered to be reliable and is selected as key study.


 


In available secondary sources to which reliability could not be assigned, auto-ignition temperature values of 220°C and 225°C were reported for the substance.