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Reference
Endpoint:
explosive properties of explosives
Type of information:
experimental study
Adequacy of study:
key study
Study period:
19.07.-17.08-2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to guideline
Guideline:
EU Method A.14 (Explosive properties)
Version / remarks:
European Commission Regulation (EC) No. 440/2008
Deviations:
no
Qualifier:
according to guideline
Guideline:
other: OECD 113
Deviations:
no
GLP compliance:
no
Key result
Parameter:
thermal sensitivity - Koenen test: limiting diameter (mm)
Number of fragments:
0
Remarks on result:
not thermal sensitive if heated under defined confinement

Two DSC measurements in closed glass crucibles showed an endothermal effect in the temperature range of 55 - 100 °C and an exothermal effect in the temperature range of 365 - 500 °C with a maximum energy release of 1297 J/g. .


 






























Ident-No.



Weigth/mg



Final temperature / °C



Temperature range / °C



Type of effect



Energy / J/g



35701



13.02



500



55 - 100


365 - 500


 



Endothermal


Exothermal


 



n.r.


1297



35704



10.90



500



55 - 85


375 - 500



Endothermal


Exothermal


 



n.r.


1195



 


Explosive properties


The heat of decomposition in the DCS measurements was above 500 J/g. Therefore, the main test on explosive properties was not necessary.


 


Mechanica/ sensitivity (friction):


The test item was sieved (mesh size 0.5 mm) before the measurement. No explosion occurred within 6 tests using a pinload of 360 N, only a discoloration of the test item was observed in all tests.


 


Mechanical sensitivity (shock):


The test item was sieved (mesh size 0.5 mm) before the measurement. No explosion within 6 tests using a mass of 10 kg falling from a height of 0.4 m was observed.


 


Thermal sensitivity:


Three tests were performed with a circular nozzle plate with a hole of 2 mm diameter. No explosion was observed. Table 2 gives the results of the thermal sensitivity.


 










































Test no



Weight of test item/g



Nozzle width/mm



T1



T2



Reaction



Appearance; number of fragments



1



20.7



2.0



77



>300



Flame



O



2



20.7



2.0



76



>300



Flame



O



3



20.7



2.0



76



>300



Flame



O



 


t1: time to any reaction, e.g. whistle or flame


t2: time to main reaction, e.g. rupture of tube or flashing


O : tube unchanged


 


The test on thermal sensitivity carried out with a nozzle with a diameter of 2.0 mm showed no explosion. Compared to the nozzle with a diameter of 6.0 mm the venting area of the nozzle with 2.0 mm is smaller by an order of magnitude. Additionally the physical state of the test item excludes the enrichment of high-energy components caused by evaporation of volatile solvents. Due to these facts an explosion with a nozzle width of 6.0 mm was excluded.

Interpretation of results:
GHS criteria not met
Conclusions:
The test item is not an explosive.
Executive summary:

The test item had no explosive properties in the sense of the European Commission Regulation (EC) No. 440/2008, Method A. 14. The test item was investigated regarding friction, shock ans thermal sensitivity and did not show explosive properties.

Description of key information

The test item had no explosive properties in the sense of the European Commission Regulation (EC) No. 440/2008, Method A. 14.

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

Justification for classification or non-classification

Based on the result, the substance is not considered to be classified for explosiveness according to Classification, Labelling, and Packaging Regulation (EC) No 1272/2008.