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Physical & Chemical properties

Explosiveness

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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
Justification for type of information:
JUSTIFICATION FOR DATA WAIVING
In accordance with REACh Annex VII / column 2, the study does not need to be conducted if there are no chemical groups associated with explosive properties present in the molecule.
Based on criteria from:
- Regulation (EC) N°1272/2008 (CLP) Annex I, §2.1.4.,
- UN Recommendations on the Transport of Dangerous Goods - Manual of Tests and Criteria (7th revised edition, 2019), Appendix 6 Screening procedures §A6.3)
- ECHA endpoint specific guidance on Information Requirements (R.7a, v6.0, July 2017, §R.7.1.11),
NO REACTIVE GROUP was identified in the chemical structure.
Then explosive properties are not anticipated, and the acceptance procedure for Class 1 explosives shall not apply, no further testing is required.
Endpoint:
explosive properties of explosives
Type of information:
read-across from supporting substance (structural analogue or surrogate)
Adequacy of study:
supporting study
Study period:
1995-06-30 to 1995-07-26
Reliability:
1 (reliable without restriction)
Rationale for reliability incl. deficiencies:
guideline study
Remarks:
The study was conducted according to an internationally recognised method, and under GLP. No deviation affected the quality of the study. Purity is specified in the report, and isomers composition is available from the notifier.
Justification for type of information:
Based on structural similarity (the target substance is one of the constituents of the source substance, together with isomers), both substances are not expected to have significantly different explosive potential. Therefore the result of the study will be considered for the target substance.
Further information is included in IUCLID Section 13.
Qualifier:
according to guideline
Guideline:
EU Method A.14 (Explosive properties)
Version / remarks:
Commission Directive 92/69/EEC
GLP compliance:
yes (incl. QA statement)
Remarks:
Inspected on 31 January 1994 / Signed on 16 March 1994
Parameter:
sensitiveness to impact: impact energy (J)
Value:
40
Remarks on result:
not sensitive to impact using an impact energy of 40 J
Parameter:
thermal sensitivity - Koenen test: diameter of the orifice plate
Value:
6
Remarks on result:
not thermal sensitive if heated under defined confinement
Parameter:
thermal sensitivity - Koenen test: diameter of the orifice plate
Value:
2
Remarks on result:
not thermal sensitive if heated under defined confinement

The results obtained during testing are detailed below:

BAM fall hammer test

Test 1 to 6: There were no signs of ignition or explosion on impact. When the test assembly was dismantled there were no signs of decomposition.

Koenen steel tube test

6 mm orifice plate

Test Time(s) Observations
1 105 Orange flame from the orifice.
125 Flame increased in size.
135 Flame further increased in size, engulfing the head of the tube. Burning test material ran down the sides of the tube and was ejected from the orifice. Black smoke was emitted.
179 Flame subsided.
256 Flame self-extinguished.
300 Test stopped. Tube recovered unchanged.
2 102 Orange flame from the orifice.
115 Flame increased in size.
134 Flame further increased in size, engulfing the head of the tube.
147 Burning test material ran down the sides of the tube and was ejected from the orifice. Black smoke was emitted.
195 Flame subsided.
261 Flame self-extinguished.
300 Test stopped. Tube recovered unchanged.
3 101 Orange flame from the orifice.
116 Flame increased in size.
127 Flame further increased in size, head of the tube engulfed in flame.
143 Burning test material ran down the sides of the tube and was ejected from the orifice. Black smoke was emitted.
199 Flame subsided.
256 Flame self-extinguished.
300 Test stopped. Tube recovered unchanged.

2 mm orifice plate

Test Time(s) Observations
1 120 Orange flame from the orifice.
131 Flame increased in size.
153 Flame further increased in size.
167 Burning test material ran down the sides of the tube and was ejected from the orifice.
179 Orange flame turned to a large orange jet of flame.
205 Jet of flame reverted to an orange flame.
254 Flame subsided.
294 Flame self-extinguished.
300 Test stopped. Tube recovered unchanged.
2 95 Orange flame from the orifice.
107 Flame increased in size.
121 Flame further increased in size.
132 Burning test material ran down the sides of the tube and was ejected from the orifice.
148 Orange flame turned to a large orange jet of flame.
188 Jet of flame reverted to an orange flame.
223 Flame subsided.
255 Flame self-extinguished.
300 Test stopped. Tube recovered unchanged.
3 104 Orange flame from the orifice.
120 Flame increased in size, burning test material ran down the sides of the tube. Flame engulfed the head of the tube.
136 Burning test material was ejected from the orifice.
146 Orange flame turned to an orange jet of flame.
169 Jet of flame reverted to an orange flame.
186 Flame subsided.
241 Flame self-extinguished.
300 Test stopped. Tube recovered unchanged.

Water content: 0.06525%

Interpretation of results:
study cannot be used for classification
Conclusions:
The test substance is not sensitive to heating and shock.
The test is inconclusive according to Regulation (EC) N°1272/2008 (CLP) criteria.
Executive summary:

The explosive properties of the substance were tested according to EU A14 guideline, for sensivity towards heating and shock, under GLP.

The BAM fall hammer was used with a 10 kg mass dropped from 0.4 m, and the test was repeated six times. The Koenen test was performed with holes of diameter 6 mm and 2 mm, and repeated three times each.

All results were negative.

Description of key information

Testing according to CLP criteria waived, based on chemical structure.

Not explosive with regard to heat or shock sensitivity (experimental, DSD criteria), from analogue.

Key value for chemical safety assessment

Explosiveness:
non explosive

Additional information

According to the screening procedure described in Regulation (EC) N°1272/2008 (CLP), the structure of the substance does not contain any chemical group associated with explosive properties.

Therefore, no further testing is required.

Moreover, a fully reliable, GLP, supporting experimental study for the determination of explosive properties, with regard to sensitivity towards heat and shock (friction not required for liquids), is available on an similar compound. However, this test, conducted according to Directive 67/548/EEC (DSD) classification criteria, cannot be extrapolated to CLP criteria, as the testing strategy and study design differ significantly. Nevertheless the Koenen tube test is common, and the negative result confirms that the substance is not sensitive to heat.

Justification for classification or non-classification

The substance is NOT classified as explosive according to CLP criteria, based on the structural formula, that fulfills the screening procedure.