Registration Dossier

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 guidelineopen allclose all
Qualifier:
equivalent or similar to
Guideline:
EU Method A.14 (Explosive properties)
Deviations:
not specified
Qualifier:
according to
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

Reference
Name:
Unnamed
Type:
Constituent

Results and discussion

Results of test series for explosivesopen allclose all
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
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.