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Reference
Endpoint:
explosiveness, other
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2014
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Expert statement
Qualifier:
no guideline followed
Principles of method if other than guideline:
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
Specific details on test material used for the study:
Acid Yellow 220
Parameter:
other: oxygen balance
Value:
-83.33
Remarks on result:
other: Calculated oxygen balance is -83.33 and therefore much higher than the trigger value of -200
Parameter:
other: exothermic decomposition energy
Remarks on result:
other: A exothermic peak representing exothermic decomposition energy, was seen between 340 and 350 °C with an energy release of 162.43 J/g. As a result, energy release is below a critical trigger level of 500 J/g and the onset of energy release is below 500 °C

Screening evaluation

Analysis of the molecular structure of Acid Yellow 220 revealed, that at least two azo groups representing alert structures for explosive properties are present in the molecule. However, calculated oxygen balance is -83.33 and therefore much higher than the trigger value of -200.

Exothermic decomposition energy

During Differential Scanning Calorimetry (DSC), a curve displaying one exothermic peak between 340 and 350 °C with an energy release of 162.43 J/g was recorded. This peak is considered to represent substance decomposition energy. As a result, energy release is below a critical trigger level of 500 J/g and the onset of energy release is below 500 °C.

Interpretation of results:
GHS criteria not met
Conclusions:
Acid Yellow 220 is considered to be non-explosive.
Executive summary:

No experimental test data, according to EU Method A.14 or comparable methods that are used to assess explosiveness, for Acid Yellow 220 are available. Hence an expert judgment based on the screening procedure was carried out based on the following guidelines:

- 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 at least two azo groups present in the molecular structure representing 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.

Description of key information

Acid Yellow 220 is considered to be not explosive.

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

Analysis of the chemical structure revealed at least two azo groups present in the molecular structure representing 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.

Justification for classification or non-classification

Acid Yellow 220 is considered to be non-explosive, hence no classification is required according to the criteria of Regulation (EC) No. 1272/2008.