Application of the Flash DSC 1 and 2+for vapor pressure determination above solids and liquids

In this work, we adapted a procedure for vapor pressures determination utilizing a fast scanning chip calorimeter to the case of a stagnant gas phase. The validity of the developed procedure was checked by comparing the vapor pressures determined in this work for several polyaromatic, heteroaromatic, and long-chain compounds with reliable vapor pressure data available in the literature. The results of the comparison show that the commercial Flash DSC 1 and the Flash DSC 2+ (Mettler Toledo, Switzerland) can be used for a reliable appraisal of the vapor pressures in a wide temperature range, which allows using these devices without additional technical changes as a source of comprehensive and internally consistent information about the energy of phase transitions.

Automated summary

In this work, a procedure for vapor pressures determination using fast scanning chip calorimeter was adapted to stagnant gas phase. The validity of this procedure was confirmed by comparing the results with literature data, showing that commercial Flash DSC devices can be used for reliable assessment of vapor pressures in a wide temperature range.