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Administrative data

Endpoint:
explosive properties of explosives
Type of information:
experimental study
Adequacy of study:
key study
Study period:
2018-03-31 - 2018-04-06
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
test procedure in accordance with national standard methods

Data source

Reference
Reference Type:
study report
Title:
Unnamed
Year:
2018
Report date:
2018

Materials and methods

Test guideline
Qualifier:
according to guideline
Guideline:
EPA OPPTS 830.6316 (Explodability)
Deviations:
no
GLP compliance:
yes (incl. QA statement)

Test material

Constituent 1
Test material form:
solid: particulate/powder

Results and discussion

Small-scale preliminary testsopen allclose all
Parameter:
thermal sensitivity - Koenen test: diameter of the orifice plate
Remarks on result:
not thermal sensitive if heated under defined confinement
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
Results of test series for explosives
Key result
Test series:
other: according to given guideline
Method:
other: thermal sensitivity (effect of flame), mechanical sensitivity (friction), mechanical sensitivity (shock)
Parameter:
other: effect of flame, friction, shock
Remarks on result:
no ignition, explosion, self-heating or visible decomposition

Applicant's summary and conclusion

Interpretation of results:
GHS criteria not met
Conclusions:
Based on the absence of positive findings in any of the three tests (thermal sensitivity, mechanical sensitivity with respect to shock and mechanical sensitivity with respect to friction), it is concluded that the test item is considered as non-explosive.
Executive summary:

The study was performed according to OPPTS 830.6316 (GLP). The explosive properties were determined by employing a battery of three tests viz. (a) test of thermal sensitivity, (b) test of mechanical sensitivity with respect to shock, and (c) test of mechanical sensitivity with respect to friction.

The definitive studies described below were conducted only after preliminary tests established that the test item was safe enough to perform the intended studies to evaluate its explosive properties. All the tests were performed by employing the apparatus recognized internationally and compliant with the specifications provided in OPPTS 830.6316.

For assessment of thermal sensitivity, the test item was filled in six test metal tubes with an aperture of 6 mm and 2 mm orifice plates and exposed to heat in the Koenen apparatus for 5 minutes using four burners with LPG gas flow at 3.2 litres per minute. The test metal tubes were observed for their appearance after the test. The results revealed that the test item was non-sensitive to heat under test conditions.

For the definitive test of mechanical sensitivity with respect to shock, samples of about 40 mg of the test item were placed in the sample holder in the BAM Fall-hammer apparatus. A weight of 10 kg was dropped on the sample holder from height of 0.40 m. The test was repeated six times. Since no explosion was observed, the test item was considered non-sensitive to mechanical shock.

For the definitive test of mechanical sensitivity with respect to friction the test item was placed on the porcelain plate in the BAM Friction apparatus for testing of mechanical sensitivity with respect to friction. A force of 360 N was applied with the porcelain peg on the test item. The plate was moved once to a distance of 10 mm using the electric motor. The test was repeated for six times. Since no explosion was observed, the test item was considered non-sensitive to mechanical friction.

Based on the absence of positive findings in any of these three tests, it is concluded that the test item is considered as non-explosive.