Registration Dossier

Administrative data

Link to relevant study record(s)

Reference
Endpoint:
explosive properties of explosives
Type of information:
experimental study
Adequacy of study:
key study
Study period:
october 2009
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
Study performed according to international guideline. No deficiencies. Performed under internal quality management system.
Qualifier:
according to guideline
Guideline:
EU Method A.14 (Explosive properties)
Version / remarks:
Official Journal of the European Union no. L142, May 31, 2008
Deviations:
yes
Remarks:
No full study is necessary
Qualifier:
according to guideline
Guideline:
other: ASTM E537-07 October 1, 2007
Deviations:
no
Principles of method if other than guideline:
A screening test was conducted to determine the decomposition energy of the substance by thermal analysis (Differential Scanning Calorimetry, DSC).
Finally, a full study is considered as not necessary, because:
According to EC Regulation 1272/2008 (CLP), Annex I, Part 2, paragraph 2.1.4.2 & 2.1.4.3, a substance or mixture shall not be classified as explosive if the exothermic decomposition energy is less than 500 J/g and the onset of exothermic decomposition is below 500°C.
GLP compliance:
no
Parameter:
sensitiveness to impact: impact energy (J)
Remarks on result:
not measured/tested
Remarks:
exothermic decomposition energy < 500 J/g
Parameter:
sensitiveness to friction: friction load (N)
Remarks on result:
not measured/tested
Remarks:
exothermic decomposition energy < 500 J/g
Parameter:
thermal sensitivity - Koenen test: limiting diameter (mm)
Remarks on result:
not measured/tested
Remarks:
exothermic decomposition energy < 500 J/g
Key result
Parameter:
other: DSC Screening test
Remarks on result:
negative (not further specified)
Remarks:
exothermic decomposition energy < 500 J/g

The DSC curve shows a sharp endothermic melting peak, followed by two exothermic decomposition peaks. The decomposition energy of the two exothermal peaks together is 449 J/g (1st peak 239 J/g, 2nd peak 210 J/g)..

The total exothermic decomposition heat is < 500 J/g. This means that the substance can be designated as non-explosive according to European Chemicals Agency (ECHA), Guidance on information requirements and chemical safety assessment, Chapter R.7a, Endpoint specific guidance, May 2008, and according to EC Regulation No 1271/2008 (CLP), Annex I, Part 2, paragraph 2.1.4.2 and 2.1.4.3. It also means that further testing on explosive properties according to EC Regulation No 440/2008, Guideline A.14 or Part I of the UN RTDG, Manual of Tests and Criteria is not required.
Interpretation of results:
GHS criteria not met
Conclusions:
3811-04-9, KClO3
Based on results in this report, the decomposition energy of test item measured using the DSC screening test is < 500 J/g (i.e. 449 J/g), which means that the substance can be designated as non-explosive and that further testing on explosive properties according to EC Regulation No 440/2008, Guideline A.14 or Part I of the UN RTDG, Manual of Tests and Criteria is not required.


Description of key information

3811-04-9, KClO3


The decomposition energy is < 500 J/g (i.e. 449 J/g), which means that the substance can be designated as non-explosive and that further testing on explosive properties according to EC Regulation No 440/2008, Guideline A.14 or Part I of the UN RTDG, Manual of Tests and Criteriai is not required.

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

Potassium chlorate is non explosive

Justification for classification or non-classification

According to EC Regulation 1272/2008 (CLP), Annex I, Part 2, paragraph 2.1.4.2 & 2.1.4.3, a substance or mixture shall not be classified as explosive if the exothermic decomposition energy is less than 500 J/g and the onset of exothermic decomposition is below 500°C.


Based on the information indicated above, no classification is needed on explosivity.