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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 there are no chemical groups present in the molecule which are associated with explosive properties
Endpoint:
explosive properties of explosives
Type of information:
experimental study
Adequacy of study:
supporting study
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
guideline study with acceptable restrictions
Qualifier:
according to guideline
Guideline:
other: UN-MTC Part III, sub-section 20.3.3.3 'Thermal stability and exothermic decomposition energy'
Version / remarks:
Appendix 6, point 3 ‘Screening procedures for substances which may have explosive properties’ of
UN-MTC refers to the decomposition energy.
Principles of method if other than guideline:
The Differential Thermal Analysis (DTA) measurement was carried out as stipulated in UN-MTC (Part III, sub-section 20.3.3.3 Thermal stability and exothermic decomposition energy).
GLP compliance:
no
Other quality assurance:
ISO/IEC 17025 (General requirements for the competence of testing and calibration laboratories)
Parameter:
other: DTA
Remarks on result:
other: heat release about 175 kJ/kg

The exothermic decomposition enthalpy was calculated by integration of the exothermal peak. At a heating rate of 3 K/min, an exothermic reaction started at about 315 °C with a heat release of about 175 kJ/kg, which was not completed until 500 °C. Please refer to the field "Illustration (picture/graph)".

Interpretation of results:
GHS criteria not met
Conclusions:
HPP 12879-1 has no explosive properties.
Executive summary:

The Differential Thermal Analysis (DTA) measurement was carried out as stipulated in UN-MTC (Part III, sub-section 20.3.3.3 Thermal stability and exothermic decomposition energy).

A small amount of the test item (22.6 mg) was weighed into a crucible made of glass that was sealed afterwards. The temperature difference between sample and reference (Al2O3) was measured as a function of temperature and was recorded electronically.

At a heating rate of 3 K/min, an exothermic reaction started at about 315 °C with a heat release of about 175 kJ/kg, which was not completed until 500 °C. Based on this thermal behaviour it is expected that the substance is not explosive.

Therefore, it can be concluded by expert judgement that ‘HPP 12879-1 (Katalysator BM 4)' has no explosive properties. Testing according to UN-MTC test procedure is not necessary.

Description of key information

HPP 12879 -1 has no explosive properties.

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

There are no chemical groups associated with explosive properties present in the molecule. Further more based on the thermal behaviour (heat release about 175 J/g) it is expected that the substance is not explosive.

Justification for classification or non-classification

The available data on explosive properties of the test substance do not meet the criteria for classification according to Regulation (EC) 1272/2008, and are therefore conclusive but not sufficient for classification.