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Diss Factsheets

Physical & Chemical properties

Explosiveness

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Endpoint:
explosive properties of explosives
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
June 2017 to Nov. 2017
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
comparable to guideline study
Justification for type of information:
Differential scanning calorimetry data can be used as screening type information to exclude explosive properties according to the Screening Procedures given in Appendix 6 to the UN Manual of Tests and Criteria; Sixth revised edition; United Nations 2015.
Qualifier:
equivalent or similar to guideline
Guideline:
other:
Version / remarks:
UN Manual of Tests and Criteria; Sixth revised edition; United Nations 2015; Appendix 6 SCREENING PROCEDURES; and section 20.3.3.3 of the manual on DSC as a measure to estimate exothermic decomposition energy.
GLP compliance:
no
Key result
Test series:
other:
Method:
other: Differential Scanning Calorimetry
Parameter:
other:
Remarks:
Decomposition onset temperature larger than [°C]
Value:
500
Result:
result is considered "-" (negative)
Remarks:
According to UN Manual of Tests and Criteria; Sixth revised edition; United Nations 2015; Appendix 6 SCREENING PROCEDURES
Remarks on result:
other: Decomposition onset temperature above 500 °C ==> non-explosive

Under exclusion of oxygen, endothermic peaks at approx. 78 °C (corresponding to melting) and 444 °C were observed. This second endothermic peak turns into exothermic reactions at an onset temperature

pronouncedly above 500 °C.

Interpretation of results:
GHS criteria not met
Conclusions:
Non-explosive, based on decomposition onset temperature >500 °C (UN Manual of Tests and Criteria, Appendix 6 SCREENING PROCEDURES)
Executive summary:

In a reliable study (RL 1) the decomposition onset temperature of the test item was determined using differential scanning calorimetry. The experiment was performed in pressure resistant steel crucibles under nitrogen from 30 °C to 600 °C at a heating rate of 3.00 K/min.

Endothermic peaks at approx. 78 °C (corresponding to melting) and 444 °C were observed. This second endothermic peak turned into exothermic reactions at an onset temperature pronouncedly above 500 °C. According to the UN Manual of Tests and Criteria; Sixth revised edition; United Nations 2015; Appendix 6 SCREENING PROCEDURES, the acceptance procedure for Class 1 needs not to be applied because of a decomposition onset temperature pronouncedly above 500 °C.

The substance can be concluded to be non-explosive.

Endpoint:
explosive properties of explosives
Data waiving:
other justification
Justification for data waiving:
the study does not need to be conducted because there are no chemical groups present in the molecule which are associated with explosive properties

Description of key information

Non-explosive

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

See below

Justification for classification or non-classification

According to CLP Regulation, Annex 1, Part 2, section 2.1.4.3.a), a substance shall not be classified as explosive if there are no chemical groups associated with explosive properties present in the molecule, with examples given in Table A6.1 in Appendix 6 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria (1). This holds true for the submission substance.

Further, in a reliable supporting study (RL 1) the decomposition onset temperature of the test item was determined using differential scanning calorimetry. The experiment was performed in pressure resistant steel crucibles under nitrogen from 30 °C to 600 °C at a heating rate of 3.00 K/min.

Endothermic peaks at approx. 78 °C (corresponding to melting) and 444 °C were observed. This second endothermic peak turned into exothermic reactions at an onset temperature pronouncedly above 500 °C. According to Appendix 6 of the UN Manual of Tests and Criteria (1), the acceptance procedure for Class 1 needs not to be applied because of a decomposition onset temperature pronouncedly above 500 °C.

The substance can be concluded to be non-explosive.

(1) UN Manual of Tests and Criteria; Sixth revised edition; United Nations 2015; Appendix 6 SCREENING PROCEDURES