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EC number: 221-070-0
CAS number: 2997-92-4
All observations are presented in the following
In the test for thermal sensitivity with an orifice
of 6 mm, after ten seconds, white fume was observed for about ten
seconds, and after 2.5 minutes, the test item started to burn under
formation of white fume. In the test with an orifice of 2 mm, a short
hissing noise was observed with white fume and sparkles after ten
seconds. After two minutes, the test item burned with a flame fountain
under formation of white fume.
In the test for mechanical sensitivity (shock) only
formation of a little white smoke and brown deposits on the steel
cylinders could be observed in some cases, but no bang or flame. The
test substance decomposed using an impact energy of 40 J, but showed no
sign of explosive properties.
The test for mechanical sensitivity (friction)
yielded a grey line on the porcelain peg in every experiment.
According to the national reference institute (BAM,
Bundesanstalt für Materialprüfung), these observations are no sign of
The explosive properties of the test item were
determined following EU A.14.
In the test for thermal sensitivity, no explosion
In the test for mechanical sensitivity (shock), no
explosion was observed using an impact energy of 40 J.
In the test for mechanical sensitivity (friction),
no explosion was observed using a weight of 360 N and a speed of 10 mm
in 0.44 seconds.
Differential thermal analysis:
up to 144 °C no reaction observed. Above 144 °C, an
exothermic reaction began with a maximum of dT = 128 K at 158 °C oven
Differential Scanning Calorimetry:
Against the detonation of 50 g Hexogen enhancement
load with 5 % wax in a 2'' steel pipe, the substance (638 g) was not
sensible. 39 cm of the pipe and about 300 g substance remained.
Incorporation in the pressure-time-bomb and
measuring the times for the pressure increase from 790 kPa to 2170 kPa,
in three runs the following results were obtained: 412 ms, 194 ms, 273
Evaluation: yes, slowly
The deflagration test was conducted at 50 °C
substance temperature. The deflagration speeds where 1.28 mm/s and 1.72
In the lead block test, a volume increase of 7 ml
resp. 5 ml based on 10 g was obtained.
In the Heat accumulation storage test, 255.1 g of
substance were stored in a 500 mL Dewar-container. A storage temperature
of 75 °C did not result in an exothermic reaction within 7 days. The
SADT is > 75 °C.
sensitivity to mechanical shock
The substance is sensitive to shock with a shock
energy of > 30 J.
sensitivity to friction
The substance is not sensitive to friction at 360 N
The following tests were conducted and following
results were obtained with the substance 2,2'-azobis[2
DSC: decomposition heat 596 - 664 J/g, ONSET
temperature 168 °C
DTA: ONSET temperature 155 °C
UN-Test E.1: No
UN-Test E.2: Low
UN-Test A.1: No
UN-Test C.1: Yes, slowly
UN-Test C.2: Yes, slowly
UN-Test F.3: No
UN-Test H.4: SADT > 75 °C
sensitivity to mechanical shock: sensitive, > 30 J
sensitivity to friction: not sensitive
In the test for thermal sensitivity, no explosion was observed.In the test for mechanical sensitivity (shock), no explosion was observed using impact energy of 40 J.In the test for mechanical sensitivity (friction), no explosion was observed using a weight of 360 N and a speed of 10 mm in 0.44 seconds.DSC: decomposition heat 596 - 664 J/g, ONSET temperature 168 °CDTA: ONSET temperature 155 °CUN-Test E.1: NoUN-Test E.2: LowUN-Test A.1: NoUN-Test C.1: Yes, slowlyUN-Test C.2: Yes, slowlyUN-Test F.3: NoUN-Test H.4: SADT > 75 °Csensitivity to mechanical shock: sensitive, > 30 Jsensitivity to friction: not sensitive
Two studies are available comprising of several
Most of the tests results were negative, if a
positive result was obtained, this result was only weak (e.g. slow
deflagration) in nature. Therefore, the substance is rated as non
explosive. Nevertheless, a classification as self-decomposing substance
may be taken into account.
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