Registration Dossier
Registration Dossier
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EC number: 480-340-8 | CAS number: -
Explosiveness
Administrative data
Link to relevant study record(s)
Description of key information
unstable explosive
Key value for chemical safety assessment
- Explosiveness:
- explosive
Additional information
EU Method A.14 - mechanical shock - mechanical friction - thermal sensitivity
Justification for classification or non-classification
The classification of explosives according to CLP Regulation is almost entirely adopted based on the UN Recommendations on the Transport of Dangerous Goods – Model Regulations (UN RTDG Model Regulations), which are appropriate for transport and also storage of packaged explosives. The test methods used for the classification of explosives are described in Part I of the UN RTDG, Manual of Tests and Criteria (test series 1 -4).
In the case of the substance the study was conducted according to the EU Method A.14. EU test method A.14 is based on the sensitivity of substances and mixtures to thermal and mechanical stimuli. EU test method A.14 comprises of three parts: thermal sensitivity test to determine the effect of heating under confinement (Koenen test); mechanical sensitivity test to determine the sensitivity to impact; mechanical sensitivity test to determine the sensitivity to friction. The criterion linked to the thermal sensitivity test to determine the effect of heating under confinement (Koenen test) is equal in EU test method A.14 and UN-MTC Test Series 2. The tests for mechanical sensitivity to impact and friction seem to be the same in EU test method A.14 and UN-MTC Test Series 3.
In the present study the substance was found to be mechanically stable as it did not present any explosion hazard after the application of impact energy of 40 J nor after the friction force of 360 N. However, during the thermal sensitivity test, at 2 mm orifice two fragments were observed in one case and three fragments in another case. Based on the evaluation criteria of EU Method A.14, a test resulting in the fragmentation of the tube into three or more pieces, is regarded into giving an explosion. Based on the thermal sensitivity, the substance is considered to present a danger of explosion under the tested conditions. It is therefore classified as an unstable explosive.
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