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Reference
Endpoint:
explosiveness
Type of information:
experimental study
Adequacy of study:
key study
Study period:
25 April 2007 to 23 August 2007
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Reason / purpose:
reference to same study
Qualifier:
according to
Guideline:
EU Method A.14 (Explosive properties)
Deviations:
no
GLP compliance:
yes (incl. certificate)
Key result
Parameter:
sensitiveness to friction: friction load (N)
Remarks on result:
not sensitive to friction using a friction load of 360 N
Key result
Parameter:
sensitiveness to impact: impact energy (J)
Remarks:
10 kg weight falling from 0.4 m
Remarks on result:
not sensitive to impact using an impact energy of 40 J
Key result
Parameter:
thermal sensitivity - Koenen test: limiting diameter (mm)
Remarks:
2 mm diameter
Number of fragments:
1
Remarks on result:
not thermal sensitive if heated under defined confinement

The heat of decomposition was above 500 J/g. Therefore the main test on explosion properties was performed.

Mechanical sensitivity (friction): No explosion within 6 tests using a pinload with 360 N was observed.

Mechanical Sensitivity (Shock): No explosion, only a decomposition (changing of the colour) within 6 tests using a mass of 10 kg falling from a height 0.4 m was observed.

Thermal Sensitivity: Three tests were performed with a circular nozzle plate with a hole of 2 mm diameter.

 

Test no.

Weight of test item (g)

Nozzle width (mm)

t1(s)

t2(s)

Reaction

Appearance; Number of Fragments

1

19.46

2.0

27.8

210.9

Flame, bang

Bottom and wall were bulged, wall was broken

2

19.31

2.0

23.2

200.6

Flame, bang

Bottom and well were bulged

3

19.35

2.0

24.3

>300

Flame

Bottom and wall were bulged

 

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 is excluded.

Interpretation of results:
GHS criteria not met
Conclusions:
The test item has no explosive properties according to the explosive properties in the sense of the consolidated version of Council Directive 67/548/EEC Annex V (Council Directive 92/69/EEC), Method A.14.
Executive summary:

The purpose of this study was the determination of the explosive properties of the test item according to the consolidated version of Council Directive 67/548/EEC Annex V (Council Directive 92/69/EEC), Part A: Methods for the determination of physico-chemical properties, A.14. Explosive properties. The study was performed in accordance with the Principles of Good Laboratory Practice (GLP) and reported with a valid GLP certificate.

 

As a screening method for the determination of explosive properties a differential scanning calorimetry (DSC) under nitrogen was performed.

The method provides a scheme of testing to determine whether or not a solid, a liquid or a pasty substance or preparation presents a danger of explosion when submitted to the effect of a flame (thermal sensitivity) or to impact or friction (sensitivity to mechanical stimuli).

The method comprises three parts:

a) a test of thermal sensitivity;

b) a test of mechanical sensitivity with respect to shock;

c) a test of mechanical sensitivity with respect to friction.

 

The heat of decomposition was above 500 J/g. Therefore the main test on explosion properties was performed.

Mechanical sensitivity (friction): No explosion within 6 tests using a pinload with 360 N was observed.

Mechanical Sensitivity (Shock): No explosion, only a decomposition (changing of the colour) within 6 tests using a mass of 10 kg falling from a height 0.4 m was observed.

Thermal Sensitivity: Three tests were performed with a circular nozzle plate with a hole of 2 mm diameter.

 

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 is excluded.

 

The test item has no explosive properties according to the explosive properties in the sense of the consolidated version of Council Directive 67/548/EEC Annex V (Council Directive 92/69/EEC), Method A.14.

Description of key information

The test item has no explosive properties according to the explosive properties in the sense of the consolidated version of Council Directive 67/548/EEC Annex V (Council Directive 92/69/EEC), Method A.14.

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

The purpose of this study was the determination of the explosive properties of the test item according to the consolidated version of Council Directive 67/548/EEC Annex V (Council Directive 92/69/EEC), Part A: Methods for the determination of physico-chemical properties, A.14. Explosive properties. The study was performed in accordance with the Principles of Good Laboratory Practice (GLP) and reported with a valid GLP certificate.

 

As a screening method for the determination of explosive properties a differential scanning calorimetry (DSC) under nitrogen was performed.

The method provides a scheme of testing to determine whether or not a solid, a liquid or a pasty substance or preparation presents a danger of explosion when submitted to the effect of a flame (thermal sensitivity) or to impact or friction (sensitivity to mechanical stimuli).

The method comprises three parts:

a) a test of thermal sensitivity;

b) a test of mechanical sensitivity with respect to shock;

c) a test of mechanical sensitivity with respect to friction.

 

The heat of decomposition was above 500 J/g. Therefore the main test on explosion properties was performed.

Mechanical sensitivity (friction): No explosion within 6 tests using a pinload with 360 N was observed.

Mechanical Sensitivity (Shock): No explosion, only a decomposition (changing of the colour) within 6 tests using a mass of 10 kg falling from a height 0.4 m was observed.

Thermal Sensitivity: Three tests were performed with a circular nozzle plate with a hole of 2 mm diameter.

 

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 is excluded.

 

The test item has no explosive properties according to the explosive properties in the sense of the consolidated version of Council Directive 67/548/EEC Annex V (Council Directive 92/69/EEC), Method A.14.

Justification for classification or non-classification

The test item has no explosive properties according to the explosive properties in the sense of the consolidated version of Council Directive 67/548/EEC Annex V (Council Directive 92/69/EEC), Method A.14.