5-bromo-1,3-dichloro-2-fluorobenzene

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: ASTM E537

Deviations:

no

GLP compliance:

yes (incl. QA statement)

Key result

Parameter:

other: Heat of decomposition

Remarks:

Differential Scanning Calorimetry

Value:

162

Remarks on result:

other: Heat of decomposition <500 J/g

Remarks:

Indicates that the substance should be considered as non-explosive

The test was carried out under the conditions listed below and the resulting DSC thermogram.

- Sample preparation: Tested as received

- Sample weight: 4.5 mg

- Crucible type: High pressure gold-plated stainless steel, 40μL

- Purge gas / flow rate: Nitrogen / 50 - 100 mL/min

- Temperature profile: 25 °C to 500 °C at 5 °C/min

The thermogram is relatively featureless, with two broad regions of mild exothermic activity from 127 - 376 °C and 412 - 463 °C. The total normalized energy output from the exothermic regions, i.e. the heat of decomposition, is 162 J/g.

Interpretation of results:

GHS criteria not met

Conclusions:

The heat of decomposition of the substance, as determined by Differential Scanning Calorimetry, was 162 J/g. Appendix 6 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria (Reference 5.1) states that substances having exothermic decomposition energies of less than 500 J/g should not be considered for classification as explosives.

Executive summary:

The heat of decomposition of the substance was determined by Differential Scanning Calorimetry in accordance with the standard ASTM E537 under GLP in a valid and reliable study. The thermogram is relatively featureless, with two broad regions of mild exothermic activity from 127 - 376 °C and 412 - 463 °C. The total normalized energy output from the exothermic regions, i.e. the heat of decomposition, is 162 J/g. Appendix 6 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria (Reference 5.1) states that substances having exothermic decomposition energies of less than 500 J/g should not be considered for classification as explosives. Therefore the test substance is not classified as an explosive substance and no further testing is required.

Description of key information

The explosive and self-reactive properties of the substance have been determined reliably by differential scanning calorimetry under GLP in accordance with the guideline ASTM E537.

Key value for chemical safety assessment

Explosiveness:

non explosive

Justification for classification or non-classification

The heat of decomposition of the substance, as determined by Differential Scanning Calorimetry, was 162 J/g. Appendix 6 of the UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria (Reference 5.1) states that substances having exothermic decomposition energies of less than 500 J/g should not be considered for classification as explosives.

The heat of decomposition of the substance, as determined by Differential Scanning Calorimetry, was 162 J/g. In accordance with the Section 20.2 of UN Recommendations on the Transport of Dangerous Goods, Manual of Tests and Criteria (Reference 5.1), the classification scheme need not be applied if the heat of decomposition is less than 300 J/g. The test substance is not classified as a self-reactive substance.