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Physical & Chemical properties

Explosiveness

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Reference
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 the substance contains chemical groups associated with explosive properties which include oxygen, but the calculated oxygen balance is less than - 200
Justification for type of information:
USTIFICATION FOR DATA WAIVING
[Specific explanation in addition to field 'Justification for data waiving']


The substance is used in a mixture with our main product Reactive Black 5_17095-24-8_BLENDWELL SA.

registration number: 01-2119471334-41-0008
submission number: PA330069-52
Decision number: SUB-D-2114220218-60-01/F

Upon the chimical reaction is finished, the black 5 is added to the substance to produce other mixtures
the red is present in the black 5 in a percentage between 2 and 5%

Reactive Black 5_17095-24-8_BLENDWELL SA is not explosive

Analysis of the chemical structure reveals at least two azo groups being present in the molecular structure representing chemical
alert structures 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 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 isrequired.
Reason / purpose:
other:
Qualifier:
according to
Guideline:
other:
Version / remarks:
CLP, Annex I, Part 2, paragraphs 2.1.4.2 and 2.1.4.3
Qualifier:
according to
Guideline:
other:
Version / remarks:
Appendix 6 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria
Qualifier:
according to
Guideline:
other:
Version / remarks:
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:
Screening based on chemical structure analysis and established calculation models
GLP compliance:
no
Remarks on result:
not measured/tested

Screening evaluation

No experimental test data according to EU Method A.14 or comparable methods for Blendazol Red 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 at least two azo groups representing chemical alert structures for explosive properties are present in the molecule.

Calculation of the oxygen balance according to the above mentioned formula is -84.52 and therefore higher than the trigger value of -200

Interpretation of results:
GHS criteria not met
Conclusions:
non explosif
Executive summary:

In summary, analysis of the chemical structure reveals at least two azo groups being present representing chemical alert structures for explosive properties. The calculated chemical oxygen balance is above the trigger value of -200

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.

Description of key information

Screening evaluation

No experimental test data according to EU Method A.14 or comparable methods for Reactive Blendazol Red 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 at least two azo groups representing chemical alert structures for explosive properties are present in the molecule.

Calculation of the oxygen balance according to the above mentioned formula is -84.52 and therefore higher than the trigger value of -200 [calculation based on molecular weight of the free acid form].

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

In summary, analysis of the chemical structure reveals at least two azo groups being present representing chemical alert structures for explosive properties. The calculated chemical oxygen balance is above the trigger value of -200

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.

Justification for classification or non-classification

In summary, analysis of the chemical structure reveals at least two azo groups being present representing chemical alert structures for explosive properties. The calculated chemical oxygen balance is above the trigger value of -200

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.


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