Radex safety calorimeter stability

Radex Safety Calorimeter. The Radex calorimeter is a modular instrument that can simultaneously evaluate six different samples (size range 0.5 to 5 ml), or one substance under a variety of conditions. Each module is a separate entity with its own calibrated oven capable of being operated under an open, closed, or pressurized condition, with all temperature differences between the sample and the oven being stored in a microprocessor for further analysis. The Radex calorimeter is very versatile samples can be tested in either an isothermal or ramp mode. In the isothermal mode, each oven is heated to a preset temperature and held at that temperature throughout the experiment. In the ramp mode of operation, the oven is heated linearly to a preset temperature, or can be maintained at a given temperature for a predetermined time. The flexibility of oven function in the Radex calorimeter enables the user to determine the intrinsic stability of a chemical and to also compare the impact of such parameters as temperature, atmosphere, and impurities on the stability of a given substance. 

The chiral oxaziridine is very reactive, even at low temperature, leading us to query its stability. Since we were proposing to carry out the preparation of the oxaziridine in a steel vessel, we investigated the thermal stability of the chiral oxaziridine on its own, in the presence of stainless steel and in the presence of ferric ion. The stability test was carried out in a RADEX safety calorimeter. The results are summarized in Figure 5. 

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