4-methoxy-2-nitrobenzenediazonium

Explosiveness

Administrative data

Endpoint:

explosive properties of explosives

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

2 (reliable with restrictions)

Rationale for reliability incl. deficiencies:

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

Data source

Reference

Reference Type:

publication

Title:

Decomposition of aromatic diazonium compounds

Author:

Ullrich, R., Grewer, Th.

Year:

1993

Bibliographic source:

Thermochimica Acta, 225, p. 201-211

Materials and methods

Test guideline

Test guideline 1

Qualifier:

equivalent or similar to guideline

Guideline:

EU Method A.14 (Explosive properties)

Deviations:

not specified

Test guideline 2

Qualifier:

according to guideline

Guideline:

other: Fallhammer - Federal Institute of Materials Testing and Research, Berlin

Deviations:

not specified

Principles of method if other than guideline:

Impact sensitivity test: Fallhammer method

GLP compliance:

no

Test material

Test material information

Constituent 1

Reference substance name:

5-(N,N-diethylaminosulphonyl)-2-methoxybenzenediazonium chloride

EC Number:

248-543-4

EC Name:

5-(N,N-diethylaminosulphonyl)-2-methoxybenzenediazonium chloride

Cas Number:

27580-14-9

Molecular formula:

C11H16ClN3O3S

IUPAC Name:

5-(diethylsulfamoyl)-2-methoxybenzenediazonium chloride

Results and discussion

Results of test series for explosives

Results of test series for explosives 1

Key result

Test series:

UN Test series 3

Method:

UN Test 3 (a) (ii): BAM Fallhammer

Parameter:

limiting impact energy (J)

Value:

2

Result:

positive, explosion

Results of test series for explosives 2

Key result

Test series:

UN Test series 3

Method:

other: Differential thermal analysis

Parameter:

other: temperature at which exothermal decomposition occurs (°C)

Value:

60

Result:

other: thermally unstable

Any other information on results incl. tables

An explosion was observed at an impact energy of 2J, after a drying time of 48h.

Decomposition (carbonizing or burning without explosion) was observed at an impact energy of 1J, after a drying time of 48h.

Applicant's summary and conclusion

Interpretation of results:

unstable explosive based on GHS criteria

Conclusions:

The substance is thermally unstable and should be classified as unstable explosive. Moreover, the substance is sensitive to mechanical impact.

Executive summary:

Even though the DTA experiment is not in accordance with the EU method description for thermal stability, it does show that the substance will no be stable as of an external temperature of 60°C. As such, the substance (in its dried form and diluted 1/1 with NaCl) is considered thermally unstable and is to be classified as an unstable explosive. The fall hammer experiment furthermore shows that the diazonium salt (in its tested form) is sensitive to mechanical impact.