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Physical & Chemical properties

Explosiveness

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Description of key information

FAT40827/A is not classified as explosive material.

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

An expert statement is given as following:

1. Reactive Groups

The appraisal of the molecular structure indicates that the molecule contains an azo group and an unsaturated C-C linkage both of 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.

2. Oxygen Balance

The oxygen balance is not considered relevant for the evaluation of the explosive properties of this substance as it is not adequately characterised by taking into account carbon, hydrogen and oxygen only and omitting nitrogen, sulphur and halogens. 3. Calorimetric Tests The exothermic decomposition energy was determined using Differential Scanning Calorimetry (DSC) in a closed, gold plated high pressure vessel. The calorimetric test is of special importance for the evaluation of compounds containing chemical groups associated with explosive properties. Various exothermic heat effects were observed. The total decomposition energy 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 degree C.

Based on above information, FAT40827/A is not 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

Based on expert judgement built on chemical structure assessment and handling experience, the substance is not subject to classification for explosivity according to CLP (Regulation EC No 1272/2008) or DSD (Directive 67/548/EEC).