Registration Dossier

Administrative data

Endpoint:
appearance / physical state / colour
Type of information:
experimental study
Adequacy of study:
key study
Cross-reference
Reason / purpose:
reference to same study
Reference
Endpoint:
explosive properties of explosives
Type of information:
experimental study
Adequacy of study:
key study
Study period:
not specified
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
study well documented, meets generally accepted scientific principles, acceptable for assessment
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 and differntial thermal analysis
GLP compliance:
no
Key result
Test series:
UN Test series 3
Method:
UN Test 3 (a) (ii): BAM Fallhammer
Parameter:
limiting impact energy (J)
Value:
15
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:
90
Result:
other: thermally unstable

An explosion was observed at an impact energy of 15J, after a drying time of 48h.

Decomposition (carbonizing or burning without explosion) was observed at an impact energy of 5J, after a drying time of 48h.

Interpretation of results:
unstable explosive based on GHS criteria
Conclusions:
The substance is considered thermally unstable and is classified as an unstable explosive. 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 90°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.

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
Qualifier:
no guideline followed
Principles of method if other than guideline:
Observation taken from publication.
GLP compliance:
no

Test material

Reference
Name:
Unnamed
Type:
Constituent
Test material form:
solid

Results and discussion

Physical state at 20°C and 1013 hPa:
solid
Substance type:
organic

Applicant's summary and conclusion

Conclusions:
The substance is solid at 20°C.