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Reference
Endpoint:
explosiveness
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2019
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Expert statement
Qualifier:
no guideline followed
Principles of method if other than guideline:
Expert judgment based on the screening procedure as described in:
- CLP, Annex I, Part 2, paragraphs 2.1.4.2 and 2.1.4.3
- Appendix 6 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria
- 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
GLP compliance:
no
Key result
Parameter:
other: Presence of chemical structures associated with explosive properties
Remarks on result:
other: no structures associated with explosive properties are present in the molecule
Key result
Parameter:
other: oxygen balance
Value:
-128.79
Remarks on result:
other: slightly higher than the trigger value of -200
Key result
Parameter:
other: Determination of the exothermic decomposition energy
Remarks on result:
other: One exothermic peaks up to 315 °C with a total energy release of about 114.42 J/g.

Screening evaluation

No experimental test data according to EU Method A.14 or comparable methods for Direct Blue 094 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 molecular structure revealed, that no such chemical alert structures are present in the molecule.

Calculated oxygen balance was -128.79 and therefore slightly higher than the trigger value of -200.

Determination of the exothermic decomposition energy

The curve displays two exothermic peaks up to 315 °C with a total energy release of about 114.42 J/g, while the first peak is considered to represent boiling off residual water of the test sample with an energy release of 99.44 J/g and the second peak represents the melting point of the test item.

As a result, the energy release is below a critical trigger level of 500 J/g with the onset of energy release being below 500 °C.

Interpretation of results:
GHS criteria not met
Conclusions:
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.
Executive summary:

No experimental test data according to EU Method A.14 or comparable methods for Direct Blue 094 are available. Hence an expert judgment based on the screening procedure as described in below mentioned guidelines was conducted:

- CLP, Annex I, Part 2, paragraphs 2.1.4.2 and 2.1.4.3

- Appendix 6 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria

- 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

Analysis of the chemical structure revealed 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 no critical energy release below the critical value of 500 J/g. Therefore, the substance is judged nonexplosive according to Directive 67/548/EEC and Regulation (EC) 1272/2008 and no further testing is required.

Description of key information

No experimental test data according to EU Method A.14 or comparable methods forDirect Blue 094 are available. Hence an expert judgment based on the screening procedure as described in below mentioned guidelines was conducted:

- CLP, Annex I, Part 2, paragraphs 2.1.4.2 and 2.1.4.3

- Appendix 6 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria

- 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

Analysis of the chemical structure revealed 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 no critical energy release below the critical value of 500 J/g. Therefore, the substance is judged nonexplosive 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

The substance was concluded to be not an explosive based on the expert judgment, hence it does not warrant classification as per the criteria of Regulation (EC) No. 1272/2008.