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Physical & Chemical properties

Explosiveness

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Endpoint:
explosiveness, other
Remarks:
Further observation on the Koenen Stahlhülsentest
Type of information:
other: Experimental study and interpretation of available results.
Adequacy of study:
weight of evidence
Study period:
2001
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
other: The Sicherheitsinstitut is recognised in safety evaluations.
Qualifier:
no guideline followed
Principles of method if other than guideline:
Tests were performed to observe a possible congestion or blockage of the 2 mm orifice of the Koenen steel tubes by foaming of the test substance.
The substance was also heated in a mini-autoclave. The decomposition was determined by an increase of temperture and pressure.
GLP compliance:
not specified
Parameter:
thermal sensitivity - Koenen test: diameter of the orifice plate
Value:
2
Number of fragments:
3
Remarks on result:
other: The result was shown to be a false positive resut.

7-AMCA caused a blockage of the orifice of the steel tubes during heating. The tube was fragmented. It can not be excluded that a destruction of the tube would probably occur at further tests, due to the blockage of the orifice.

The substance was heated in a mini-autoclave. The decomposition was determined by a increase of temperture and pressure. The determined rate of pressure increase was below 1 bar/s. Class 1 substance should have a rate of pressure increase of >= 150 bar/s.

Interpretation of results:
other: Not considered as explosive.
Conclusions:
The fragentation of the Koenen steel tubes are not considered as signs of explosivity but that foaming of the test substance during heating caused a blockage of the 2 mm orifice.
Executive summary:

Tests were performed to observe a possible congestion or blockage of the 2 mm orifice of the Koenen steel tubes by foaming of the test substance.

The substance was also heated in a mini-autoclave. The decomposition was determined by a increase of temperture and pressure.

The fragentation of the Koenen steel tubes are not considered as signs of explosivity but that foaming of the test substance during heating caused a blockage of the 2 mm orifice.

Endpoint:
explosive properties of explosives
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
other:
Endpoint:
explosiveness
Type of information:
experimental study
Adequacy of study:
weight of evidence
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
other: Guideline study with GLP.
Qualifier:
according to guideline
Guideline:
EU Method A.14 (Explosive properties)
Deviations:
no
GLP compliance:
yes
Parameter:
other: More sensitive to shock than m-dinitrobenzene
Remarks:
migrated information
Remarks on result:
negative (not further specified)
Parameter:
other: More sensitive to friction than m-dinitrobenzene
Remarks:
migrated information
Remarks on result:
negative (not further specified)
Parameter:
other: Explosive under influence of flame
Remarks:
migrated information
Remarks on result:
positive (not further specified)

BAM fall hammer test:

In none of the 6 tests any sign of ignition or explosion was observed with the test substance. There were no flames, no sparks and no bang.

BAM friction test:

All 6 tests with the test substance showed the same results. There were no signs of an ignition or explosion, no flames, no sparks and no crepitating.

KOENEN steel tube test:

A fragmentation of the tube into 3 pieces which were connected by narrow strips of metal was observed in the test with the 2 mm orifice plate. This was interpreted as an explosion in the test report. An updated interpretation is found in the summary record on explosiveness.

Reference substance:

1,3-dinitrobenzene did not explode in the BAM fall hammer test and the BAM friction test, as expected.

 

Interpretation of results:
explosive
Remarks:
Migrated information
Conclusions:
Conclusion
7-AMCA has no explosive properties with regard to shock or friction, but it has - in this experiment - "explosive properties" with regard to heat, which are meanwhile considered to be false positive ones.
 
Executive summary:

Methods

The explosive properties were determined using the following methods:

• The BAM (Bundesanstalt fuer Materialforschung und -pruefung, Berlin) fall hammer test which is a test for mechanical sensitivity.

• The BAM friction test which is a test for mechanical sensitivity with respect to friction.

• The KOENEN steel tube test which is a test for thermal sensitivity.

 

Results

BAM fall hammer test: In none of the 6 tests any sign of ignition or explosion was observed with the test substance. There were no flames, no sparks and no bang.

BAM friction test: All 6 tests with the test substance showed the same results. There were no signs of an ignition or explosion, no flames, no sparks and no crepitating.

KOENEN steel tube test:

A fragmentation of the tube into 3 pieces which were connected by narrow strips of metal was observed in the test with the 2 mm orifice plate. This was interpreted as an explosion in the test report. An updated interpretation is found in the summary record on explosiveness.

Description of key information

The substance contains no chemical groups associated with explosivity, as they are listed in the ECHA "Guidance on information requirements and chemical safety assessment" or the ECHA "Guidance on the Application of the CLP Criteria".
Additional experimental studies were performed:
BAM fall hammer test: In none of the 6 tests any sign of ignition or explosion was observed with the test substance. There were no flames, no sparks and no bang.
BAM friction test: All 6 tests with the test substance showed the same results. There were no signs of an ignition or explosion, no flames, no sparks and no crepitating.
KOENEN steel tube test:
A fragmentation of the tube into 3 pieces which were connected by narrow strips of metal was

observed in the test with the 2 mm orifice plate. This was first interpreted as an explosion

in the test report. Further experiments showed a blockage of the 2 mm orifice by foaming of the

test substance as cause for the fragmentation of the tube. Also the pressure increase rate was

much below the value needed for a classification in Class 1.
The fragmentation is a false positive finding.

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

Justification for classification or non-classification

No justification for a classification was obtained.