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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
explosiveness
Type of information:
other: Expert statement
Adequacy of study:
key study
Study period:
03 November 2015
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Expert statement
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:
The screening procedure is 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
Parameter:
other: Oxygen balance
Remarks on result:
other: The calculated chemical oxygen balance is is -158.39 and is above the trigger value of -200.
Parameter:
other: exothermic decomposition energy
Remarks on result:
other: The determination of the exothermic decomposition energy demonstrated an energy release far below the critical value of 500 J/g.

Screening evaluation

Analysis of the molecular structure revealed that 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 -158.39 and therefore higher than the trigger value of -200.

Determination of the exothermic decomposition energy

The curve displayed one exothermic peak between 280 and 350 °C with an overall energy release of 252.39 J/g. 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.

Interpretation of results:
GHS criteria not met
Conclusions:
The test substance is considered to be non-explosive.
Executive summary:

Analysis of the chemical structure revealed two azo groups representing alerts for explosive properties. However, 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 Regulation (EC) No. 1272/2008 and no further testing is required.

Description of key information

Analysis of the chemical structure revealed two azo groups representing alerts for explosive properties. However, 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 Regulation (EC) No. 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

Acid Yellow 079 has been considered to be non-explosive based on the expert statement, hence does not warrant classification according to the EU Classification, Labelling and Packaging of Substances and Mixtures (CLP) Regulation (EC) No. 1272/2008.