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EC number: 814-308-5
CAS number: 63286-42-0
- Experiment 1: An endothermic effect was observed
between 250°C and 350°C. The endothermic effect was probably
obtained due to boiling of the test item.
- Experiment 2: A duplicate DSC was performed to
determine the duplicate melting and boiling temperatures of the test
item. A lower cooling rate of -1°C/minute and a higher heating rate of
50°C/minute was used from 25°C with more test item. The endothermic peak
had not shifted to higher temperatures. It
demonstrated that boiling of the test item caused the endothermic
effect. The extrapolated onset temperature of the boiling peak was
340.411°C. Since a higher heating rate was used
the extrapolated onset temperature of the boiling peak was not used for
calculation of the boiling temperature.
- Experiment 3: Using conditions similar to Experiment 2,
from 250°C, an endothermic peak was observed. The extrapolated onset of
the boiling peak was 338.063°C.
- Experiment 4: Similar results as in Experiment 3 were
obtained. The extrapolated onset of the boiling peak was 338.372°C.
The mean result of experiment 3 and 4 was considered to
be the boiling point: 338.2°C (611.4K).
The boiling temperature was examined using OECD TG 103
and EU Method A.2. with the Differential Scanning Calorimetry method
under GLP. The guideline defines the standard boiling temperature as the
temperature at which the vapour pressure of a liquid is the same as the
standard pressure (i.e. 1013.25 hPa). The boiling temperature of the
test item were determined as the mean boiling temperature obtained from
two experiments; from which the thermal events for each individual
DSC-runs were within ±0.5°C of the determined mean. The mean boiling
point was 338.2 ± 0.5 °C (611.4 ± 0.5 K).
Bp: 338.2 ± 0.5 °C (or 611.4 ± 0.5 K) at ca. 1 atmosphere
pressure, OECD TG 103 - DSC method, 2017
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