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EC number: 204-370-6
CAS number: 120-11-6
Introduction. A study was performed to determine the
melting point/range and boiling point of test item BENZYL ISO EUGENOL
using the Differential Scanning Calorimetry (DSC). The method followed
was designed to be compliant with Regulation EC No. 440/2008 Method A.1
and A.2. and OECD Test Guideline 102 , "Melting Point/Melting Range" and
No. 103, "Boiling Point" (1995).
Testing was conducted between 20 July 2018 and 6 August 2018.
Methods. In this method, two crucibles were put in the
apparatus furnace under inert atmosphere (helium) at atmospheric
pressure. One crucible contained the test item, the other was empty and
considered as the reference. A specific temperature program was applied.
The crucibles were linked to two thermocouples fixed on the TG-DSC
sample carrier. Heat flow differences between the two crucibles and mass
variation were recorded on a thermogram.
A cooling system using liquid nitrogen allowed experiments with low
temperatures down to -120°C.
Results. Two trials were conducted and corresponding
thermograms were obtained, giving us the following results:
Trial Melting point Exothermic peak (degradation
temperature) Endothermic peak (after degradation) Ambient
1 54.2 °C 255.8 °C
2 54.1 °C 255.6 °C
The melting point respect validity criteria (less than 0.5°C of
difference up to 326.85°C).
Moreover, the melting point of the Indium respects the checking cards
limits (156.7°C for a reference value of 156.6°C) so as its enthalpy
(29.05 J/g for a reference value of 28.6 J/g).
Conclusion. The melting point of the substance was
determined as 54.2°C (obtained during the second heating phase).
An exothermic peak was observed at 255.7°C (mean of 256.8 °C for the
first determination and 256.6°C for the second determination) and
corresponds to the degradation of the substance.
An endothermic peak was determined at 361.0 °C (mean of 361.0 °C for the
first determination and 361.0°C for the second determination) and
corresponds with the boiling of the degraded test item.
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