Tetrasodium 4,4'-bis[[4-morpholino-6-(p-sulphonatoanilino)-1,3,5-triazin-2-yl]amino]stilbene-2,2'-disulphonate

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:

28 May 2015

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

study well documented, meets generally accepted scientific principles, acceptable for assessment

Qualifier:

no guideline followed

Principles of method if other than guideline:

No experimental test data according to EU Method A.14 or comparable methods for FAT 66042 are available. Considering that explosive properties are associated with the presence of certain chemical groups in the molecule, a screening evaluation was conducted aimed to identify the presence of such reactive groups within the molecular structure harvesting the capability for a rapid high energy release.

GLP compliance:

no

Parameter:

other: Calculation of the oxygen balance.

Remarks on result:

other: Calculation of the oxygen balance according to the above mentioned formula is -144.47 and therefore higher than the trigger value of -200.

Parameter:

other: Determination of the exothermic decomposition energy

Remarks on result:

other: The curve displays no exothermic peak up to 350 °C. As a result the energy release is below a critical trigger level of 500 J/g with the onset of energy release being below 500 °C.

No experimental test data according to EU Method A.14 or comparable methods for FAT 66042 are available.

Considering that explosive properties are associated with the presence of certain chemical groups in the molecule, a screening evaluation can be conducted aimed to identify the presence of such reactive groups within the molecular structure harvesting the capability for a rapid high energy release.

According to CLP Regulation examples of groups which may indicate explosive properties are:

-       C-C unsaturation (e.g. acetylenes, acetylides, 1,2-dienes);

-       C-Metal, N-Metal (e.g. Grignard reagents, organo-lithium compounds);

-       Contiguous nitrogen atoms (e.g. azides, aliphatic azo compounds, diazonium salts, hydrazines, sulphonylhydrazides);

-       Contiguous oxygen atoms (e.g. peroxides, ozonides);

-       N-O (e.g. hydroxyl amines, nitrates, nitro compounds, nitroso compounds, N-oxides, 1,2-oxazoles);

-       N-halogen (e.g. chloramines, fluoroamines);

-       O-halogen (e.g. chlorates, perchlorates, iodosyl compounds).

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 -144.47 and therefore higher than the trigger value of -200.

Determination of the exothermic decomposition energy

In order to assess if the substance FAT 66042 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 no exothermic peak up to 350 °C. As a result the energy release is below a critical trigger level of 500 J/g with the onset of energy release being below 500 °C.

Interpretation of results:

GHS criteria not met

Conclusions:

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 no energy release up to 350 °C. 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.

Executive summary:

In summary, analysis of the chemical structure of FAT 66042 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 no energy release up to 350 °C. 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

The test substance is non-explosive.

Key value for chemical safety assessment

Explosiveness:

non explosive

Additional information

In summary, analysis of the chemical structure of FAT 66042 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 no energy release up to 350 °C. 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

The test substance 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.