Disodium 6-amino-5-[[4-[(2-bromo-1-oxoallyl)amino]-2-sulphonatophenyl]azo]-4-hydroxynaphthalene-2-sulphonate

Explosiveness

Link to relevant study record(s)

Reference

Endpoint:

explosiveness

Type of information:

other: Expert statement

Adequacy of study:

key study

Study period:

November 2014

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 - 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,

Deviations:

no

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: Oxygen balance is -104.96 and therefore above the trigger value of -200.

Parameter:

other: exothermic decomposition energy

Remarks on result:

other: one exothermic peak between 240 and 320 °C with an energy release of 307.21 J/g.

Remarks:

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.

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 -104.96 and therefore above the trigger value of -200.

Determination of the exothermic decomposition energy

In order to assess if the substance Reactive Red 065 possesses the potential to rapidly release huge amounts of energy a thermal analysis (Differential Scanning Calorimetry) has been performed at the Analytical Department Huntsman Textile Effects (Germany) GmbH. The results of the measurement are shown in Annex 1. The curve displays one exothermic peak between 240 and 320 °C with an energy release of 307.21 J/g. 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:

Reactive Red 065 considered to be non-explosive.

Executive summary:

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 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

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 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

Justification for classification or non-classification

As the Reactive Red 65 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.