Investigation of the melting behavior of the reference materials biphenyl and phenyl salicylate by a new type adiabatic scanning calorimeter

•Novel type of Peltier-element-based adiabatic scanning calorimeter (pASC).•Simultaneous high-resolution enthalpy and heat capacity data.•Melting transition of the reference materials biphenyl and phenyl salicylate.•Reliable purity analysis procedure.

Simultaneously measured high-resolution enthalpy and heat capacity data are obtained by means of a novel type Peltier-element-based adiabatic scanning calorimeter that can also operate as a classical adiabatic heat-step calorimeter. Specific enthalpy and specific heat capacity results with 2% uncertainty and sub-mK temperature resolution are presented for the melting transition of the calorimetric reference materials biphenyl and phenyl salicylate. The simultaneously obtained enthalpy and heat capacity data allow for a simplified and reliable purity analysis.

Graphical abstractMelting transition of biphenyl by pASC. Figure optionsDownload full-size imageDownload as PowerPoint slide