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Physical & Chemical properties

Explosiveness

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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:
EU Method A.14 (Explosive properties)
Deviations:
yes
Remarks:
described below
GLP compliance:
yes
Parameter:
sensitiveness to impact: impact energy (J)
Remarks on result:
not sensitive to impact using an impact energy of 40 J
Parameter:
sensitiveness to friction: friction load (N)
Remarks on result:
not sensitive to friction using a friction load of 360 N
Parameter:
thermal sensitivity - Koenen test: diameter of the orifice plate
Remarks on result:
not thermal sensitive if heated under defined confinement
 Shock test
 Test n°  Weight (kg)  Height (m)  Results
 1  10  0.4 no ignition, no explosion
 2  10  0.4 no ignition, no explosion 
 3  10  0.4 no ignition, no explosion
 4  10  0.4 no ignition, no explosion
 5  10  0.4 no ignition, no explosion
 6  10  0.4 no ignition, no explosion

Adipic Acid have been determined not to have shock sensitivity to explosion under the conditions of the test.

 Friction test
 Test n°  Weight (N)  Results  Observation
 1  360  no ignition, no explosion  fine black trace
 2  360  No ignition, no explosion  fine black trace
 3  360  No ignition, no explosion  fine black trace
 4  360  No ignition, no explosion  fine black trace
 5  360  No ignition, no explosion  fine black trace
 6  360  No ignition, no explosion  fine black trace
Adipic Acid have been determined not to have friction sensitivity to explosion under the conditions of the test.
  Thermal sensitivity test
 Hole diameter (mm)  Weight (g) V 27.14 cm³  T1 (s)  T2 (s)  Result
 6  22.806  87  195  negative
 6  22.640  85  200  negative
 6  22.980  88  211  negative
 2  23.008  81  200  negative
 2  22.880  84  215  negative
 2  22.694  85  230  negative
T1 : time from application of the flame to a noticeable effect from the orifice. T2 : time from application of the flame to the end of the combustion without recorded event (e.g. explosion) as in these tests or to an explosion. Adipic Acid have been determined not to have thermal sensitivity to explosion under the conditions of the test.
Interpretation of results:
GHS criteria not met
Conclusions:
Adipic acid has been determined not to have shock-, friction- and thermal sensitivity to explosion under the conditions of the test (Rhodia, 2008).
Executive summary:

The determination of explosion properties of adipic acid was performed in accordance with the EU Method A.14 (Explosive properties). Adipic acid has been determined not to have shock-, friction- and thermal sensitivity to explosion under the conditions of the test (Rhodia, 2008).

Description of key information

Adipic acid have been determined not to have shock-, friction- and thermal sensitivity to explosion under the conditions of the test performed in accordance with the EU Method A.14 (Explosive properties)(Rhodia, 2008).

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

Justification for classification or non-classification

The results with respect to explosiveness for adipic acid are conclusive but not sufficient for classification.

The determination of explosion properties of adipic acid was performed in accordance with the EU Method A.14 (Explosive properties). In the shock test, no ignition and no explosion was observed. The friction and the thermal sensitivity test were carried out 6 times showing no positive test results.

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