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Please be aware that this old REACH registration data factsheet is no longer maintained; it remains frozen as of 19th May 2023.

The new ECHA CHEM database has been released by ECHA, and it now contains all REACH registration data. There are more details on the transition of ECHA's published data to ECHA CHEM here.

Diss Factsheets

Administrative data

Endpoint:
explosive properties of explosives
Type of information:
experimental study
Adequacy of study:
key study
Study period:
27 November 2017 - 11 January 2018
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
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)
Deviations:
no
GLP compliance:
yes

Test material

Constituent 1
Chemical structure
Reference substance name:
Isophthalohydrazide
EC Number:
220-425-7
EC Name:
Isophthalohydrazide
Cas Number:
2760-98-7
Molecular formula:
C8H10N4O2
IUPAC Name:
isophthalohydrazide
Test material form:
solid: particulate/powder
Details on test material:
Appearance: White crystal powder
Test item storage: At room temperature
Specific details on test material used for the study:
The substance is an organic substance.

Results and discussion

Small-scale preliminary testsopen allclose all
Key result
Parameter:
other: exothermic decomposition energy [J/g]
Value:
161.4
Key result
Parameter:
other: onset of the exothermic decomposition [°C]
Value:
250

Any other information on results incl. tables

With both experiments, a small endothermic peak between 200°C and 230°C was observed. It was most obtained due to melting of the test item.

Also in both experiments an exothermic decomposition effect starting at 230°C was observed.

The extrapolated onset temperature of the exothermic effect in the first experiment was 248.297°C and 251.581°C in the second test.

The exothermic decomposition energy was 161.62 J/g in the first experiment and 161.17 J/g in the second test.

After the experiments, a black charred expended residue remained at the bottom of the sample container and some residue was observed at the outside of the sample lid. The sample lid was swollen due to pressure. It indicated reaction and/or decomposition of the test item during the test.

Mean (n=2) exothermic decomposition energy: 161.4 J/g.

Mean (n=2) onset temperature: 250°C.

DSC curves the experiments: see illustration.

Applicant's summary and conclusion

Interpretation of results:
other: not classified under CLP or GHS
Conclusions:
The test item has no explosive properties.

Executive summary:

The exothermic decomposition energy and onset of exothermic decomposition of the substance were determined by DSC in a GLP study. From duplicate measurements the onset of exothermic decomposition was determined to be 250°C and the exothermic decomposition energy was determined to be 161.4 J/g. Because the exothermic decomposition energy of the substance is < 500 J/g the acceptance procedure for Class 1 explosives do not have to be applied. The substance has no explosive properties.