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EC number: 665-911-3 | CAS number: 5855-23-2
Explosiveness
Administrative data
- Endpoint:
- explosive properties of explosives
- Type of information:
- experimental study
- Adequacy of study:
- key study
- Study period:
- 13 Jul - 13 Aug 2020
- Reliability:
- 1 (reliable without restriction)
- Rationale for reliability incl. deficiencies:
- guideline study
Data source
Reference
- Reference Type:
- study report
- Title:
- Unnamed
- Year:
- 2 020
- Report date:
- 2020
Materials and methods
Test guidelineopen allclose all
- Qualifier:
- according to guideline
- Guideline:
- UN Manual of Tests and Criteria: Part I: Classification procedures, test methods and criteria relating to explosives of Class 1
- Version / remarks:
- UN Manual of Tests and Criteria, rev. 7 (2019), Appendix 6 - Koenen test: UN-tests 1(b), 2(b) - Time / pressure test 1(c), 2(c)
- Deviations:
- no
- Qualifier:
- according to guideline
- Guideline:
- other: OECD 113 Screening test for thermal stability and stability in air
- Deviations:
- no
- GLP compliance:
- yes (incl. QA statement)
- Remarks:
- Hess. Ministerium für Umwelt, Klimaschutz, Landwirtschaft und Verbraucherschutz, Wiesbaden, Germany
Test material
- Reference substance name:
- 1-(2,2,4-trimethyl-1,2-dihydroquinolin-1-yl)ethan-1-one
- EC Number:
- 665-911-3
- Cas Number:
- 5855-23-2
- Molecular formula:
- C14 H17 N O
- IUPAC Name:
- 1-(2,2,4-trimethyl-1,2-dihydroquinolin-1-yl)ethan-1-one
Constituent 1
Results and discussion
Small-scale preliminary tests
- Parameter:
- other: decomposition energy from DSC measurement
- Value:
- 532
- Remarks on result:
- other: Two exothermal effects in the temperature range of 100 - 180 °C and 270 - 440 °C with a maximum energy release of 532 J/g.
Results of test series for explosivesopen allclose all
- Test series:
- UN Test series 1
- Method:
- UN Test 1 (b): Koenen test
- Parameter:
- limiting diameter (mm)
- Result:
- negative, no explosion
- Remarks on result:
- other: No explosion was observed, the limiting diameter was less than 1 mm.
- Test series:
- UN Test series 1
- Method:
- UN Test 1 (c) (i): Time/pressure test
- Parameter:
- other: Pressure rise time
- Result:
- negative, no or slow deflagration
- Remarks on result:
- p = 2070 kPa: no
- Remarks:
- None of the three tests reached a pressure of 2070 kPa.
- Test series:
- UN Test series 2
- Method:
- UN Test 2 (b): Koenen test
- Parameter:
- limiting diameter (mm)
- Result:
- negative, no explosion
- Remarks on result:
- other: No explosion was observed, the limiting diameter was less than 1 mm.
- Test series:
- UN Test series 2
- Method:
- UN Test 2 (c) (i): Time/pressure test
- Parameter:
- other: Pressure rise time
- Result:
- negative, no or slow deflagration
- Remarks on result:
- p = 2070 kPa: no
- Remarks:
- None of the three tests reached a pressure of 2070 kPa.
- Test series:
- UN Test series 2
- Method:
- UN Test 2 (a): UN gap test
- Parameter:
- other: fragmentation
- Result:
- other: see remarks
- Remarks on result:
- neither a test for propagation of detonation nor a test for sensitivity to detonative shock is required because the exothermic decomposition energy of the organic substance is less than 800 J/g
Any other information on results incl. tables
Thermal stability
Two DSC measurement in closed
glass crucibles showed two exothermal effects in the temperature range
of 100 - 180 °C and 270 - 440 °C with a maximum energy release of 532
J/g. The course of the baseline above the second exothermal effect was
ambiguous, this could have been caused by a pressure rise. The results
are summarized in the Table below:
| Ident-No. | Weight / mg | Final temperature / °C | Temperature range / °C | Type of effect | Energy / J/g |
| 39139 | 10.28 | 500 | 120 - 180 270 - 435 |
Exothermal Exothermal |
23 509 |
| 39142 | 10.62 | 500 | 100 - 180 275 - 440 |
Exothermal Exothermal |
26 432 |
The heat of decomposition was above 500 J/g. Therefore, further tests on explosive properties had to be performed. As the heat of decomposition was below 800 J/g and the test item is an organic substance the appropriate tests were Koenen-test according to UN 1 (b)/2 (b) and Time-Pressure test according to UN 1 (c)/2 (c).
Koenen test
The Koenen test was started
with a diameter of 20 mm and subsequently continued with 1 2 mm, 8 mm, 5
mm, 3 mm, 2.5 mm, 2 mm, 1.5 mm and 1 mm. 11 tests were performed. The
results are shown in Table below.
| Amount / g | Diameter of orifice / mm | t1 / s | t2 / s | Reaction | Effect |
| 28.1 | 20 | 52 | > 300 | Flame | o |
| 28.1 | 12 | 53 | > 300 | Flame | o |
| 28.1 | 8 | 53 | > 300 | Flame | o |
| 28.1 | 5 | 52 | > 300 | Flame | o |
| 28.1 | 3 | 50 | > 300 | Flame | o |
| 28.1 | 2.5 | 49 | > 300 | Flame | o |
| 28.1 | 2 | 49 | > 300 | Flame | o |
| 28.1 | 1.5 | 48 | > 300 | Flame | o |
| 28.1 | 1.0 | 46 | > 300 | Flame | o |
| 28.1 | 1.0 | 47 | > 300 | Flame | o |
| 28.1 | 1.0 | 47 | > 300 | Flame | o |
t1: time to any reaction, e.g.
whistle or flame
t2: time to main reaction, e.g. rupture of tube or flashing
o: tube unchanged
No explosion was observed. The limiting
diameter was less than 1 mm. Therefore, the results had to be evaluated
as negative according to UN tests 1(b) and 2(b): negative "-".
Time / pressure test
Table below shows the used amounts of sample and the results
from the Time / pressure test.
| Test 1 | Test 2 | Test 3 | |
| Amount in g | 4.9 | 5.0 | 5.0 |
| Time to 690 kPag in s | 2.34 | 4.20 | 3.31 |
| Time to 2070 kPag in s | - | - | - |
| Pressure rise time in s | - | - | - |
None of the three tests reached a pressure of 2070 kPa. Therefore, the result had to be evaluated as negative according to UN tests 1(c) and 2(c): negative "-". These evaluations indicate no (or slow) deflagration according to the UN tests 1(c) and 2(c).
Applicant's summary and conclusion
- Interpretation of results:
- GHS criteria not met
- Remarks:
- Due to a decomposition energy <800 J/g and due to the fact that the test item consisted mainly of organic components a serie 1 type (a) test (propagation of a detonation) was not necessary (see appendix 6 of UN Manual of Tests and Criteria, revision 7 (2019)). Also due to negative results presented above from the UN tests 1(b) (effect of heating under confinement) and 1 (c) (effect of ignition under confinement), the test item can be excluded from classification in class 1 (explosives) according to series 1 of the UN Manual of Tests and Criteria, revision 7 (2019).
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