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Diss Factsheets

Physical & Chemical properties

Explosiveness

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Endpoint:
explosive properties of explosives
Type of information:
experimental study
Adequacy of study:
key study
Study period:
May 1997
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Qualifier:
equivalent or similar to guideline
Guideline:
EU Method A.14 (Explosive properties)
Principles of method if other than guideline:
The test substance was tested for mechanical sensitivity (shock and friction). The principles of the test methods including their deviations to the guideline are described in detail in the IUCLID field "any other information on materials and methods".
GLP compliance:
not specified
Key result
Parameter:
sensitiveness to friction: friction load (N)
Remarks on result:
not sensitive to friction using a friction load of 360 N
Key result
Parameter:
sensitiveness to impact: impact energy (J)
Remarks on result:
not sensitive to impact using an impact energy of 40 J

Mechanical sensitivity (friction): No scorch marks on the clay plate or the wooden lag and changes in the substance were observed in all six tests. Mechanical sensitivity (shock): No scorch marks on the driving band or the underlayment and no change of the substance at any sample were observed.

Interpretation of results:
GHS criteria not met
Remarks:
Migrated information
Conclusions:
The two tests for mechanical sensitivity to friction and shock showed no explosive properties of 4-Chlorobenzonitrile.
Executive summary:

The study was conducted according to a slightly different method than guideline A.14 and investigated the mechanical sensitivity to friction and shock of 4-Chlorobenzonitrile. The thermal sensivity was not investigated. The results show no explosive properties of 4 -Chlorobenzonitrile as the test substance is not sensitive to shock and friction.

Endpoint:
explosive properties of explosives
Type of information:
experimental study
Adequacy of study:
supporting study
Study period:
May 1997
Reliability:
2 (reliable with restrictions)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods
Qualifier:
no guideline followed
Principles of method if other than guideline:
This test investigates thermal behaviour of the test substance by differential scanning calorimetry (DSC). Two to ten mg of the test substance are heated in a platen from room temperature to a maximum of 500°C. The exothermal and endothermal heat fluxes are measured the heat turnover is quantified.
GLP compliance:
not specified
Parameter:
thermal sensitivity - Koenen test: limiting diameter (mm)
Remarks:
DSC analysis
Remarks on result:
not thermal sensitive if heated under defined confinement

Two endothermal reactions were measured at 97 °C and 215 °C where the substance melts and boils, respectively.

Interpretation of results:
non explosive
Remarks:
Migrated information
Conclusions:
Two endothermal reactions were measured at 97 °C and 215 °C where the substance melts and boils, respectively.
Executive summary:

In this study a differential scanning calometry was performed with the test substance 4 -Chlorobenzonitrile and the thermal behaviour of the substance was elucidated. Two endothermal reactions were measured at 97 °C and 215 °C where the substance melts and boils, respectively. Therefore, 4 -Chlorobenzonitrile is not susceptible to thermal shock.

Endpoint:
explosive properties of explosives
Data waiving:
study scientifically not necessary / other information available
Justification for data waiving:
the study does not need to be conducted because there are no chemical groups present in the molecule which are associated with explosive properties

Description of key information

The mechanical sensitivity (shock and friction) and the thermal behaviour of the test substance according to a test method similar to guideline EU A.14 were determined. The tests for mechanical sensitivity to friction and shock showed no explosive properties of 4-Chlorobenzonitrile. Furthermore 4-Chlorobenzonitrile showed only two endothermic reactions (melting and boiling) in a DSC.

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

The studies were conducted according to a slightly different method compared to guideline EU A.14 and investigated the mechanical sensivity of 4 -Chlorobenzonitrile to friction and shock. The thermal sensitivity was investigated in a differential scanning calorimetry. The results did not show explosive properties of 4 -Chlorobenzonitrile as the test substance is neighter sensitive to shock and friction, nor to high temperature.

Justification for classification or non-classification

According to the results 4 -Chlorobenzonitrile is considered to be not an explosive and does not have to be classified.