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EC number: 300-644-5
CAS number: 93951-21-4
The DSC measurement in an aluminium crucible with a hole showed a
broad endothermal effect in the temperature range of 40 – 200 °C and an
exothermal effect in the temperature range of 225 – 330 °C. No further
endothermal or exothermal effects were observed up to the final
temperature of 500 °C. The results of the DSC measurement are summarized
in Table 1.
Table1: Melting point (DSC-measurement)
Test item / mg
Final test temperature / °C
Type of effect
Temperature range / °C
40 – 200
225 – 330
Aluminium with a hole
After the DSC measurement with thefinal
test temperature of 500 °Cthe test item appeared
unchanged. A mass loss of about 30 % occurred.
The onset temperature is derived from the intersection of the
tangent line with the highest slope of the endothermal peak with the
baseline. Because of the unusual shape of the endothermal peak in the
temperature range of 40 – 200 °C no clear onset temperature could be
determined. Therefore an additional measurement with the capillary
method was performed in order to clarify the melting range.
A measurement with the capillary method was performed to clarify
the results of the DSC measurements. Since this measurement was
performed only as a verifying screening a high heating rate of 10 K/min
was chosen. The filling height of the test item was approximately 5 mm.
The results are summarised inTable 2.
Table2: Results of the capillary method
Set point /°C
Heating rate / K/min
End point /°C
approx. 102 °C: beginning of condensate formation, test item unchanged
approx. 273 °C: test item darkened (colour change from dark brown into black)
up to 350 °C: no further change (test item did not melt or boil)
The capillary method measurement showed a condensate formation
that is assumed to result from condensing water, as according to the
certificate of analysis the test item contained 7.2 % water. The
darkening of the test item at approx. 273 °C indicated a decomposition
of the test item. This was in accordance with the exothermal effect
observed in the DSC measurement in the temperature range of
225 – 330 °C.
Under consideration of the results from the DSC measurements and
the capillary method it was concluded that the test item did not boil
under atmospheric conditions up to 500 °C, but decomposed starting
around 225 °C.
The test item did not boil under atmospheric conditions up to
500 °C. The test item decomposed starting around 225 °C.
The test substance decomposes prior to boiling
The theoretical Boiling Point was calculated by EpiWin to be
1442.57°C according to the Adapted Stein and Brown Method.
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