Registration Dossier
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EC number: 257-827-7 | CAS number: 52301-70-9
Explosiveness
Administrative data
Link to relevant study record(s)
- Endpoint:
- explosive properties of explosives
- Type of information:
- other: Expert statement
- Adequacy of study:
- key study
- Study period:
- 2016
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- test procedure in accordance with generally accepted scientific standards and described in sufficient detail
- Qualifier:
- according to guideline
- Guideline:
- other: CLP, Annex I, Part 2, paragraphs 2.1.4.2 and 2.1.4.3
- Qualifier:
- according to guideline
- Guideline:
- other: Appendix 6 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria
- Qualifier:
- according to guideline
- Guideline:
- other: Technical Guidance Document on the Information Requirements for REACH, Part 2 EWG 1-7, REACH Implementation Project (RIP) 3.3 Phase 2, chapter 7.1.11.3
- Principles of method if other than guideline:
- An expert assessent based on above mentioned recommendations has been performed.
- GLP compliance:
- no
- Key result
- Parameter:
- other: expert assessment performed
- Remarks on result:
- negative (not further specified)
- Remarks:
- expert assessmnet
- Interpretation of results:
- other: not classified as explosive according to the CLP Regulation (EC) 1272/2008
- Conclusions:
- In summary, analysis of the chemical structure reveals no alerts for explosive properties. The calculated chemical oxygen balance is above the trigger value of -200, but the determination of the exothermic decomposition energy demonstrated an energy release far below the critical value of 500 J/g. Therefore, the substance is considered to be non-explosive according the CLP Regulation (EC) 1272/2008 and no further testing is required.
- Executive summary:
No experimental test data according to EU Method A.14 or comparable methods for the test item are available.
Considering that explosive properties are associated with the presence of certain chemical groups in the molecule, a screening evaluation can be conducted aimed to identify the presence of such reactive groups within the molecular structure harvesting the capability for a rapid high energy release.
According to CLP Regulation examples of groups which may indicate explosive properties are:
- C-C unsaturation (e.g. acetylenes, acetylides, 1,2-dienes);
- C-Metal, N-Metal (e.g. Grignard reagents, organo-lithium compounds);
- Contiguous nitrogen atoms (e.g. azides, aliphatic azo compounds, diazonium salts, hydrazines, sulphonylhydrazides);
- Contiguous oxygen atoms (e.g. peroxides, ozonides);
- N-O (e.g. hydroxyl amines, nitrates, nitro compounds, nitroso compounds, N-oxides, 1,2-oxazoles);
- N-halogen (e.g. chloramines, fluoroamines);
- O-halogen (e.g. chlorates, perchlorates, iodosyl compounds).
Analysis of the above depicted molecular structure revealed that no such chemical alert structures are present in the molecule.
Calculation of the oxygen balance according to the above mentioned formula is -106.81 and therefore higher than the trigger value of -200.
Determination of the exothermic decomposition energy:
In order to assess if the substance possesses the potential to rapidly release huge amounts of energy a thermal analysis (Differential Scanning Calorimetry) has been performed at the Analytical Department of the sponsor
The curve displays no exothermic peak up to 350 °C. As a result, the overall energy release is below a critical trigger level of 500 J/g and the onset of energy release is below 500 °C.
In summary, analysis of the chemical structure reveals no alerts for explosive properties. The calculated chemical oxygen balance is above the trigger value of -200, but the determination of the exothermic decomposition energy demonstrated an energy release far below the critical value of 500 J/g. Therefore, the substance is considered to be non-explosive according to Directive 67/548/EEC and Regulation (EC) 1272/2008 and no further testing is required.
Reference
Screening evaluation
No experimental test data according to EU Method A.14 or comparable methods for the substance are available.
Considering that explosive properties are associated with the presence of certain chemical groups in the molecule, a screening evaluation can be conducted aimed to identify the presence of such reactive groups within the molecular structure harvesting the capability for a rapid high energy release.
According to CLP Regulation examples of groups which may indicate explosive properties are:
- C-C unsaturation (e.g. acetylenes, acetylides, 1,2-dienes);
- C-Metal, N-Metal (e.g. Grignard reagents, organo-lithium compounds);
- Contiguous nitrogen atoms (e.g. azides, aliphatic azo compounds, diazonium salts, hydrazines, sulphonylhydrazides);
- Contiguous oxygen atoms (e.g. peroxides, ozonides);
- N-O (e.g. hydroxyl amines, nitrates, nitro compounds, nitroso compounds, N-oxides, 1,2-oxazoles);
- N-halogen (e.g. chloramines, fluoroamines);
- O-halogen (e.g. chlorates, perchlorates, iodosyl compounds).
Analysis of the above depicted molecular structure revealed that no such chemical alert structures are present in the molecule.
Calculation of the oxygen balance according to the above mentioned formula is -106.81 and therefore higher than the trigger value of -200.
Determination of the exothermic decomposition energy
In order to assess if the substance possesses the potential to rapidly release huge amounts of energy a thermal analysis (Differential Scanning Calorimetry) has been performed at the Analytical Department of the sponsor. The results of the measurement are shown in Annex 1.
The curve displays no exothermic peak up to 350 °C. As a result, the overall energy release is below a critical trigger level of 500 J/g and the onset of energy release is below 500 °C.
Description of key information
The analysis of the chemical structure reveals no alerts for explosive properties. The calculated chemical oxygen balance is above the trigger value of -200, but the determination of the exothermic decomposition energy demonstrated an energy release far below the critical value of 500 J/g. Therefore, the substance is considered to be non-explosive according to Directive 67/548/EEC and Regulation (EC) 1272/2008 and no further testing is required.
Key value for chemical safety assessment
- Explosiveness:
- non explosive
Additional information
Justification for classification or non-classification
In summary, analysis of the chemical structure reveals no alerts for explosive properties. The calculated chemical oxygen balance is above the trigger value of -200, but the determination of the exothermic decomposition energy demonstrated an energy release far below the critical value of 500 J/g. Therefore, the substance is considered to be non-explosive according to the CLP Regulation (EC) 1272/2008 and no further testing is required.
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