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EC number: 262-309-9
CAS number: 60580-61-2
Melting Point (DSC)
In the temperature range of 160 °C – 240 °C,
an endothermic effect was observed. In the temperature range 400 – 470
°C an exothermal decomposition with an average energy of -400 J/g was
Results of the DSC-measurements
Sample weight [mg]
Onset of Effect [°C]
Range of effect [°C]
Weight loss [mg]
Atmospheric pressure / hPa
160 – 240 (endo)
400 – 470 (exo)
170 – 240 (endo)
420 – 470 (exo)
Measurements by the Capillary Method
To verify the results of the DSC
measurement, an additional measurement with the capillary method
(Apparatus: Stuart Melting Point SMP 30) was performed in the
temperature range of 50 °C – 400 °C with a heating rate of
10 K/min. No melting, boiling or change of the colour or of the
physical state of the test item was observed during the
measurement with the capillary method. According to the
observations during the tests with the capillary method, the
endothermic effect starting at 160 °C in the DSC measurements with
open crucibles cannot be assigned to the melting of the test item.
Due to the fact that an exothermic
effect was observed in the DSC measurements starting at a
temperature of approx. 400 °C with a significant loss of weight,
it can be stated that the test item has no melting point and no
boiling point up to its decomposition.
Seitz (2018): The test item zinc
5-nitroisophthalate has no melting point up to 500 °C at atmospheric
pressure (1003.3 hPa), it decomposes at temperatures of approx. 400 °C
as determined by differential scanning calorimetry according to
Regulation EC No. 440/2008 Method A.1. and OECD Test Guideline 102
Löffler (1988): The test item showed no
exothermal reaction up to 350 °C in a differential thermal analysis.
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