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Physical & Chemical properties

Explosiveness

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Endpoint:
explosive properties of explosives
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because the substance is an organic substance or mixture containing chemical groups associated with explosive properties, but the exothermic decomposition energy is less than 500 J/g and the onset of exothermic decomposition is below 500°C
Endpoint:
explosive properties of explosives
Type of information:
experimental study
Adequacy of study:
key study
Study period:
06.07.2016 - 12.08.2016
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Qualifier:
according to
Guideline:
EU Method A.14 (Explosive properties)
Deviations:
no
GLP compliance:
no
Key result
Parameter:
sensitiveness to impact: impact energy (J)
Remarks on result:
not measured/tested
Key result
Parameter:
thermal sensitivity - Koenen test: limiting diameter (mm)
Remarks on result:
not measured/tested

Thermal stability

Two DSC-measurements in closed crucibles (glass crucible in high pressure crucible) with the test item showed an endothermal effect in the temperature range of 80 – 115 °C and an exothermal effect in the temperature range of 315 - 365 °C with a maximum energy of 323 J/g. Up to the final temperature (500 °C) no further endothermal or exothermal effect was observed.

Table 1: Thermal stability (DSC measurements)

Ident-No.

Wetght / mg

Final temperature / °C

Temperature range / °C

Type of effect

Energy / J/g

35678

10.86

500

80 - 105

315 - 365

Endothermal

Exothermal

n.r.

323

35679

10.77

500

80 - 115

320 - 365

Endothermal

Exothermal

n.r.

300

n.r.: not relevant

Explosive properties

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

Interpretation of results:
GHS criteria not met
Conclusions:
The heat of decomposition was below 500 J/g. Therefore, the main test on explosive properties was not necessary.
Executive summary:

A study according to Regulation (EC) 440/2008 Method A.14 was performed to determine the explosive properties of the test item. As a preliminary test the thermal stability of the test item was determined with the differential scanning calorimetry DSC. Two DSC-measurements in closed crucibles (glass crucible in high pressure crucible) with the test item showed an endothermal effect in the temperature range of 80 – 115 °C and an exothermal effect in the temperature range of 315 - 365 °C with a maximum energy of 323 J/g. Up to the final temperature (500 °C) no further endothermal or exothermal effect was observed. As the heat of decomposition of the test item was below 500 J/g no main test on explosive properties was performed.

Description of key information

Not applicable.

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

In accordance with column 2 of REACH Annex VII, the explosiveness study does not need to be conducted as there are no chemical groups associated with explosive properties in the molecule (reference 4.14-1).

Additionally, a study according to Regulation (EC) 440/2008 Method A.14 was performed to determine the explosive properties of the test item. As a preliminary test the thermal stability of the test item was determined with the differential scanning calorimetry DSC. Two DSC-measurements in closed crucibles (glass crucible in high pressure crucible) with the test item showed an endothermal effect in the temperature range of 80 – 115 °C and an exothermal effect in the temperature range of 315 - 365 °C with a maximum energy of 323 J/g. Up to the final temperature (500 °C) no further endothermal or exothermal effect was observed. As the heat of decomposition of the test item was below 500 J/g no main test on explosive properties was performed (reference 4.14-2).

Justification for classification or non-classification

Classification, Labelling, and Packaging Regulation (EC) No 1272/2008

Based on the structure of the molecule and taking into account the provisions laid down in Regulation (EC) No 1272/2008 (CLP), as amended for the twelfth time in Regulation (EU) 2019/521, the test item does not have to be classified with respect to explosiveness.