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EC number: 203-016-8
CAS number: 102-24-9
8.4.1. Preliminary Test
The TGA curve of the test item is shown in Figure 1 (attached).
Starting at 50°C, the weight of the
sample decreased significantly.
After the experiment, a dark grey residue remained in the sample
container (original colour:
colourless). The change of the colour indicated reaction and/or
decomposition of the test
8.4.2. Main Study
The DSC curve obtained with Experiment 1 is shown in Figure 2
(attached). During cooling, a glass
transition was observed between -80°C and -40°C (results are archived in
the raw data).
During cooling a glass transition was observed between -75°C and -25°C.
point of the glass transition was -56.885°C. An endothermic peak was
observed between 0°C
and 175°C. The endothermic effect was most likely obtained due to
evaporation of volatile
components and reaction and/or decomposition of the test item. An
endothermic peak was
observed starting at 375°C. The endothermic effect was due to reaction
decomposition of the test item.
After the experiment, a colourless solid residue remained in the sample
Experiment 2 was performed as a duplicate of the glass transition
temperature. Figure 3 (attached)
shows the DSC curve obtained. The inflection point of the glass
transition -57.341°C. After
the experiment, the sample appeared to have been unchanged, i.e. no
evaporation were observed.
The glass transition temperature was determined as the mean glass
transition temperature of
Experiment 1 (-56.885°C) and Experiment 2 (-57.341°C).
The melting temperature of Trimethoxyboroxine (TMBX) were determined by
No melting point was determined. A glass transition of the test item
was observed at -57.1°C (216.0K).
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