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EC number: - | CAS number: -
TGA EXPERIMENT (PRELIMINARY TEST)
Significant decrease of weight from 180°C. 25% weight loss at 190°C and 70% weight loss at 294°C.
After the experiment, a black molten residue remained in the sample container (original colour: pale yellow). The change of the colour indicated reaction and/or decomposition of the test item.
DSC EXPERIMENT 1
During cooling a glass transition was observed between -40°C and -80°C. During heating a glass transition was observed between -25°C and -75°C. The inflection point was -49.201°C. From 150°C a slight deviation of the baseline into the exothermic direction was observed. After the experiment, a colourless molten residue remained in the sample container. The exothermic effect was probably obtained due to reaction and/or decomposition of the test item.
DSC EXPERIMENT 2
A higher end temperature was used in the Experiment 2 to gain more insight into the slight exothermic effect observed in Experiment 1. Similar results as in Experiment 1 were obtained for the glass transition. The inflection point of the glass transition was 50.052°C. From 150°C on, however, a large endothermic effect followed by an exothermic effect was observed. After the experiment, a black molten residue remained in the sample container. The change of the colour indicated reaction and/or decomposition of the test item.
The glass transition temperature was determined as the mean inflection point of Experiment 1 and Experiment 2.
Differential Scanning Calorimetry (DSC) experiments were performed in a GLP study according to EC A.1, OECD 102 and OPPTS 830.7200.
The liquid substance has no melting/freezing temperature between 25°C and -90°C. From duplicate measurements the mean glass transition temperature was determined to be -49.6°C.
During heating from 25°C, reaction and/or decomposition of the substance started at 150°C.
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