Registration Dossier
Registration Dossier
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EC number: 221-576-1 | CAS number: 3148-73-0
Explosiveness
Administrative data
Link to relevant study record(s)
Description of key information
Thermal sensitivity: not explosive, EU Method A.14 (Koenen sleeve test), Jackson 2003
Friction sensitivity: not explosive, EU Method A.14, Jackson 2003
Shock sensitivity: not explosive, EU Method A.14, Jackson 2003
Key value for chemical safety assessment
- Explosiveness:
- non explosive
Additional information
The substance was found in testing by Jackson (2003) to not meet the criteria for explosive in EU Test Method A.14, in terms of mechanical sensitivity with respect to shock or friction, or thermal sensitivity.
The substance contains functional groups (hydrazines) identified in the UN recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, Appendix 6, Table A6.1, as being associated with explosive properties. No thermal decomposition was observed up to the boiling point at ca. 305°C, in a DSC measurement (O'Connor, 2012).
The thermal test was conducted according to EU Test Method A14, down to a limiting orifice diameter of 2mm. Testing to a limiting diameter of 1mm is required for conclusive classification under Regulation 1272/2008, in accordance with UN RTDG test method E.1.
The available data is considered to be relevant, reliable, and adequate for risk assessment purposes, and meet the data requirements for Regulation (EC) No. 1907/2006, Annex VII, 7.11.
Justification for classification or non-classification
The test methods required for classification under Regulation (EC) No. 1272/2008 (UN Recommendation on Transport of Dangerous Goods) differ slightly from those described in Regulation (EC) No. 440/2008. The thermal sensitivity tests in A.14 and E.1 differ in that the latter is tested to a smaller limiting diameter (respectively 2mm vs 1mm), and hence the latter is a more sensitive test. As a result the substance is not classified for explosive properties in accordance with Regulation (EC) No. 1272/2008, Annex I, section 2.1, but is not considered conclusive.
The available experimental test data are considered relevant, reliable and adequate for classification purposes under 67/548/EEC. The substance was found in testing by Jackson (2003) to not meet the criteria for explosive in EU Test Method A.14, in terms of mechanical sensitivity with respect to shock or friction, or thermal sensitivity. As a result the substance is not classified for explosive properties in accordance with Directive 2001/59/EC, Annex VI, 2.2.1.
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