1-(3,5-Dichloro-4-fluoro-phenyl)-2,2,2-trifluoro-ethanone

Explosiveness

Link to relevant study record(s)

Reference

Endpoint:

explosive properties of explosives

Type of information:

experimental study

Adequacy of study:

key study

Reliability:

1 (reliable without restriction)

Rationale for reliability incl. deficiencies:

guideline study

Qualifier:

according to guideline

Guideline:

other: UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, Sixth Revised Edition, 2015, Appendix 6.

Version / remarks:

2015

Deviations:

no

Qualifier:

according to guideline

Guideline:

other: ASTM E537

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Parameter:

other: Heat of decomposition

Remarks on result:

other: No further testing required, as heat of decomposition <500 J/g

The thermogram was featureless apart from two small exothermic peaks over the temperature range 261 - 380 °C. The total normalised energy output from the exothermic peaks, i.e. the heat of decomposition, was 37 J/g.

Interpretation of results:

GHS criteria not met

Conclusions:

The heat of decomposition determined by DSC was 37 J/g. As this is well below 500 J/g, the substance is considered to be non-explosive.

Executive summary:

The heat of decomposition of the substance was determined by differential scanning calorimetry under GLP in accordance with the standard ASTM E537. This is a suitable technique for measuring the exothermal decomposition energy as required for screening explosive substances. In accordance with Appendix 6 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria, a substance can be considered as non-explosive and further testing is not required if the exothermic decomposition energy of a substance is less than 500 J/g. An aliquot of 3.6 mg of the test substance was placed in a high pressure gold-plated stainless steel crucible and heated from 25 to 500 °C at a rate of 5 °C/min. Nitrogen was used as purge gas at a flow rate of 50 to 100 mL/min. The resulting thermogram was featurless apart from two small exothermic peaks over the temperature range 261 - 380 °C. The total normalised energy output from these peaks, i.e. the heat of decomposition, was 37 J/g. This indicates that the substance should be considered as non-explosive.

Description of key information

Heat of decomposition = 37 J/g (DSC screening, ASTM E537, GLP)

Key value for chemical safety assessment

Explosiveness:

non explosive

Justification for classification or non-classification

The heat of decomposition of the substance was tested under GLP by Differential Scanning Calorimetry in accordance with the standard ASTM E537 and found to be 37 J/g. In accordance with Appendix 6 of the UN Recommendations on Transport of Dangerous Goods, a substance can be considered as non-explosive if the energy of exothermic decomposition of the substance is less than 500 J/g. The substance is therefore considered to be non-explosive and a classification is not warranted.