Abstract
Thermal analysis and calorimetry are indispensable for the safer process development. In this paper application of thermal analysis and calorimetry technique for evaluation of potential hazard of chemical substances and thermal risk assessment of chemical process are introduced. Based on the results of thermal analyses, heat flow calorimetry and highly sensitive isothermal calorimetry hazard criteria of heat of reaction for chemical substances and risk criteria of adiabatic temperature rise and time to maximum rate for chemical processes are indicated.