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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:
2017-05-29 to 2017-06-09
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))
Version / remarks:
2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
AFNOR: NF T 20-037
Version / remarks:
1985
Deviations:
no
GLP compliance:
yes (incl. QA statement)
Key result
Auto-ignition temperature:
243 °C
Atm. press.:
1 013 hPa

Results:


 


Preliminary test


 































































































































































































Injection No.



Volume of test item injected in the oven


(µL)



Temperature
(°C)



Auto-ignition



Maximal temperature of the air recorded in the center of the test flask after auto-ignition (°C)



Atm pressure
(kPa)



Relative humidity
(%)



Observed



Corrected



Y / N



Lag(s)



Observed



Corrected



1



70



109



109



N



/



/



/



97.4



52



2



70



152



152



N



/



/



/



97.4



52



3



70



200



200



N



/



/



/



97.4



53



4



70



250



250



Y



8



268



268



97.6



54



5



70



223



223



N



/



/



/



97.8



46



6



70



236



236



N



/



/



/



97.8



41



7



70



243



243



Y



35



250



250



97.9



38



8



70



238



238



N



/



/



/



98.7



38



9



90



238



238



N



/



/



/



98.7



36



10



110



238



238



Y



49



258



258



98.7



36



11



130



238



238



Y



50



253



253



98.7



37



12



150



238



238



N



/



/



/



98.7



34



13



130



236



236



N



/



/



/



98.4



36



14



110



236



236



N



/



/



/



98.4



37



 


The lowest auto-ignition temperature was found between 236 °C and 238 °C (corrected values) with a volume of 110 µL.


 


The main test will be conducted using this volume.


 


Main test


Volume of test item injected in the oven: 110 µL


 


Assay No. 1












































































Injection No.



Temperature (°C)



Auto-ignition



Lag (s)



Maximal temperature of the air recorded in the center of the test flask after auto-ignition (°C)



Atmospheric pressure
(kPa)



Relative humidity
(%)



Observed



Corrected



Observed



Corrected



1



236



236



N



/



/



/



98.4



37



2



238



238



N



/



/



/



98.2



36



3



240



240



N



/



/



/



98.2



38



4



242



242



N



/



/



/



98.0



36



5



243



243



Y



49



257



257



98.0



34



 


Assay No. 2











































Injection No.



Temperature (°C)



Auto-ignition



Lag (s)



Maximal temperature of the air recorded in the center of the test flask after auto-ignition (°C)



Atmospheric pressure
(kPa)



Relative humidity
(%)



Observed



Corrected



Observed



Corrected



1



243



243



N



/



/



/



98.2



43



2



244



244



Y



38



259



259



98.2



44



 


Assay No. 3

































































Injection No.



Temperature (°C)



Auto-ignition



Lag (s)



Maximal temperature of the air recorded in the center of the test flask after auto-ignition (°C)



Atmospheric pressure
(kPa)



Relative humidity
(%)



Observed



Corrected



Observed



Corrected



1



244



244



Y



35



257



257



98.2



48



2



243



243



Y



50



253



253



98.2



51



3



241



241



N



/



/



/



98.1



46



4



242



242



N



/



/



/



98.1



46



 


Assay No. 4











































Injection No.



Temperature (°C)



Auto-ignition



Lag (s)



Maximal temperature of the air recorded in the center of the test flask after auto-ignition (°C)



Atmospheric pressure
(kPa)



Relative humidity
(%)



Observed



Corrected



Observed



Corrected



1



242



242



N



/



/



/



98.1



45



2



243



243



Y



45



257



257



98.1



45



 


Assay No. 5











































Injection No.



Temperature (°C)



Auto-ignition



Lag (s)



Maximal temperature of the air recorded in the center of the test flask after auto-ignition (°C)



Atmospheric pressure
(kPa)



Relative humidity
(%)



Observed



Corrected



Observed



Corrected



1



243



243



Y



41



259



259



98.1



46



2



242



242



N



/



/



/



98.1



46



 


Summary


Only the auto-ignition runs for each assay are summarised in the following table:


 








































































 



Auto-ignition temperature (°C)



Auto-ignition



Maximal temperature of the air recorded in the center of the test flask after ignition (°C)



Atmospheric pressure
(kPa)



Relative humidity
(%)



Assay No.



Observed



Corrected



Lag(s)



Observed



Corrected



1



243



243



49



257



257



98.0



34



2



244



244



38



259



259



98.2



44



3



243



243



50



253



253



98.2



51



4



243



243



45



257



257



98.1



45



5



243



243



41



259



259



98.1



46



 


Conclusion


The auto-ignition temperature of the test item was 243 ± 3 °C (corrected temperature).


 

Conclusions:
An auto-ignition temperature value of 243 ± 3 °C at 1013 hPa was determined for the substance using a relevant test method and in compliance with GLP. The result is considered to be reliable.

Description of key information

Auto-ignition temperature:  243 ± 3 °C at 1013 hPa (EU Method A.15)

Key value for chemical safety assessment

Autoflammability / Self-ignition temperature at 101 325 Pa:
243 °C

Additional information

An auto-ignition temperature value of 243 ± 3 °C at 1013 hPa was determined for the substance using a relevant test method and in compliance with GLP. The result is considered to be reliable.