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EC number: 607-384-4 | CAS number: 244768-32-9
From the TGA curve it could be derived that the weight of the sample decreased significantly at 225°C. At 466°C the sample weight has decreased by 25%. After the experiment, a charred molten residue remained in the sample container (original colour: white). The change of the colour indicated reaction and/or decomposition of the test item.
In order to determine the melting more precisely, the DSC curve with a heating rate of 20°C/min was obtained and showed an endothermic peak between 200°C and 230°C. The extrapolated onset temperature of the peak was 216.15°C. The effect was most likely obtained due to melting. This effect was followed by an exothermic effect between 230°C and 250°C. The latter was most likely obtained due to reaction and/or decomposition of the test item. Another exothermic effect was seen between 300°C and 350°C. This effect was most likely due to further reaction and/or decomposition of the test item. After the experiment, a charred molten residue remained.
To investigate the melting peak between 200°C and 230°C, a repeated heating cycle was applied with a lower end temperature (i.e. 230°C). The extrapolated onset temperature of the melting peak was 216.07°C. After the experiment it was observed that the test item was molten and yellowish. The change of colour and state of matter indicated melting in combination with reaction and/or decomposition.
The melting temperature of T002488 was determined as the average melting temperature obtained from Experiment 1 and Experiment 2 and equals 216.1°C (489.3K).
In a GLP study according to OECD guideline 102, EU method A.1 and EPA OPPTS 830.7200 (Klimisch 1, Reingruber, 2016) the melting point of T002488 was determined to be 216.1°C.
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