[No public or meaningful name is available]

Explosiveness

Link to relevant study record(s)

Reference

Endpoint:

explosive properties of explosives

Type of information:

other: Expert statement

Adequacy of study:

key study

Study period:

Experiment start and end - 02 February 2010; Study completion date - 19 April 2010.

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

other: Expert statement

Qualifier:

according to guideline

Guideline:

other: UN Recommendations on the Transport of Dangerous Goods (Manual of Tests and Criteria, Fourth revised edition, 2003, Appendix 6, “Orange Book”)

Deviations:

no

GLP compliance:

no

Specific details on test material used for the study:

Identification: FAT 40851/A TE
Batch Number: TZ 5891 / BOP 02-09
Purity: 69.9 % all coloured components
Appearance: Orange powder
Expiry Date: July 31, 2014
Storage Conditions: At room temperature at about 20 °C

Parameter:

other: Determination of the exothermic decomposition energy

Remarks on result:

other: The total decomposition energy determined between room temperature and 500°C, was found to be about 354 J/g thus being far below the UN limit of 500 J/g. The onset point of the first peak was at about 97°C.

Reactive Groups

The appraisal of the molecular structure indicates that the molecule contains an azo group which might be associated with explosive properties according to the UN Recommendations and the Handbook of Reactive Chemical Hazards. Other chemical groups associated with explosive properties as compiled in these documents are not present. In absence of other criteria or in case of reasonable doubt with respect to rapid decomposition, this finding would lead to the recommendation for experimental testing. The halogen atoms are only linked directly to carbon atoms and therefore do not indicate explosive properties.

 

Oxygen Balance

The oxygen balance is not considered relevant for the evaluation of the explosive properties of this substance as it is not adequately characterized by taking into account carbon, hydrogen and oxygen only and omitting nitrogen, sulphur and halogens.

 

Calorimetric Tests

The calorimetric test is of special importance for the evaluation of compounds containing chemical groups associated with explosive properties. Two flat exothermic peaks with a total decomposition energy (ΔHDec determined between room temperature and 500 °C) of 211 J/g were found, thus being significantly below the UN limit of 500 J/g. The onset point of the first exothermic peak was at about 233 °C.

Interpretation of results:

GHS criteria not met

Conclusions:

Applying the internationally recognized UN Recommendation criteria, test substance is not to be classified as explosive material and no experimental determination according to the EC test guideline A.14 has to be performed.

Executive summary:

The purpose of this study was to estimate the explosive properties of test substance based on the UN Recommendations on the Transport of Dangerous Goods (Manual of Tests and Criteria, Fourth revised edition, 2003, Appendix 6, “Orange Book”) where a set of criteria is compiled to identify materials being potential explosives. The result of the calorimetric test is considered relevant for this substance as the compound does contain chemical groups associated with explosive properties. The total of the decomposition energy (ΔHDec determined between room temperature and 500 °C) was found to be about 211 J/g, thus being significantly below the UN limit of 500 J/g. The result of the oxygen balance is not considered relevant for this substance as the substance is not adequately characterised by taking into account carbon, hydrogen and oxygen only and omitting nitrogen, sulphur and halogens. Thus, it can be concluded beyond a reasonable doubt, that test substance is not a potential explosive and does not have a potential for rapid energy release. Nevertheless, this judgement is in respect to classification; it does not necessarily mean that any processing hazards can be discounted. Applying the internationally recognised UN Recommendation criteria, test substance is not to be classified as explosive material and no experimental determination according to the EC test guideline A.14 has to be performed.

Description of key information

The substance is considered as non explosive.

Key value for chemical safety assessment

Explosiveness:

non explosive

Additional information

The purpose of this study was to estimate the explosive properties of test substance based on the UN Recommendations on the Transport of Dangerous Goods (Manual of Tests and Criteria, Fourth revised edition, 2003, Appendix 6, “Orange Book”) where a set of criteria is compiled to identify materials being potential explosives. The result of the calorimetric test is considered relevant for this substance as the compound does contain chemical groups associated with explosive properties. The total of the decomposition energy (ΔHDec determined between room temperature and 500 °C) was found to be about 211 J/g, thus being significantly below the UN limit of 500 J/g. The result of the oxygen balance is not considered relevant for this substance as the substance is not adequately characterised by taking into account carbon, hydrogen and oxygen only and omitting nitrogen, sulphur and halogens. Thus, it can be concluded beyond a reasonable doubt, that test substance is not a potential explosive and does not have a potential for rapid energy release. Nevertheless, this judgement is in respect to classification; it does not necessarily mean that any processing hazards can be discounted. Applying the internationally recognised UN Recommendation criteria, test substance is not to be classified as explosive material and no experimental determination according to the EC test guideline A.14 has to be performed.

Justification for classification or non-classification

The substance is considered to be not explosive, hence it does not warrant classification for explosiveness in accordance with the criteria laid out by Regulation (EC) No.1272/2008.