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Administrative data

Endpoint:
explosive properties of explosives
Remarks:
DSC screening procedure
Type of information:
experimental study
Adequacy of study:
key study
Study period:
06 Aug 2018 - 19 Oct 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
other: UN Manual of Tests and Criteria, Appendix 6 "Screening procedures" -Screening procedures for substances which may have explosive properties
Version / remarks:
Rev. 6 (2015)
DSC test to check criteria of screening procedure point 3.3 (c)
Deviations:
no
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Sebacohydrazide
EC Number:
213-126-8
EC Name:
Sebacohydrazide
Cas Number:
925-83-7
Molecular formula:
C10H22N4O2
IUPAC Name:
sebacohydrazide
Test material form:
solid: particulate/powder
Details on test material:
Test item name (as stated in report): SDH
Test item storage: at room temperature protected from light

Results and discussion

Small-scale preliminary testsopen allclose all
Key result
Parameter:
other: exothermic decomposition energy [J/g]
Remarks on result:
negative (not further specified)
Remarks:
no exothermic effects observed up to a temperature of 550°C
Key result
Parameter:
other: onset of the exothermic decomposition [°C]
Remarks on result:
negative (not further specified)
Remarks:
no exothermic effects observed up to a temperature of 550°C

Any other information on results incl. tables

During the first four experiments, performed in closed aluminium sample containers, an endothermic effect between 150°C and 225°C was observed. This effect was ascribed to melting of the substance. Also, during the first three experiments, an exothermic decomposition effect starting at 250°C was observed. During Experiment 4, a lower heating rate was applied and the start of the exothermic decomposition effect shifted to a lower temperature (225°C).

In all four experiments the exothermic decomposition energy could not be determined adequately, because the sample pans ruptured, which disturbed the measurements.

Therefore a 5th experiment was performed in a gold-coated sample container, with a heating rate of 2.5 °C/min. See DSC curve in 'Illustration'.

Again, an endothermic peak was observed between 150°C – 225°C (ascribed to melting of the test item), but no exothermic decomposition energy effects. Also, the sample pan remained intact.

After the first four experiments, a black molten residue remained at the bottom of the sample container. This was visible since the sample lid had opened due to pressure. It indicated that reaction and/or decomposition of the test item occurred during the test.

After Experiment 5 it was not possible to open de container. Therefore it was not possible to investigate the residue.

As the 5th experiment was free of disturbances during the measurement, the result of this test is used to draw the conclusion on the potential explosive properties of the test item. In absence of an exothermic effect up to 550 °C, a value for exothermic decomposition energy and onset temperature of exothermic decomposition cannot be derived.

Therefore it is concluded that the substance has no explosive properties.

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Remarks:
and also not classified under CLP
Conclusions:
The test item has no explosive properties.