Thermogravimetric Analysis with           Differential Scanning Calorimetry

Thermogravimetric analysis (TGA) is a method of thermal analysis in which changes in physical and chemical properties of materials are measured as a function of increasing temperature (with constant heating rate), or as a function of time (with constant temperature and/or constant mass loss).

TGA can provide information about physical phenomena, such as:

  • second-order phase transitions (including vaporization, sublimation, absorption, adsorption, and desorption)
  • chemisorption
  • desolation (especially dehydration),
  • decomposition
  • solid-gas reactions (e.g., oxidation or reduction)

Differential scanning calorimetry (DSC) is a thermo-analytical technique in which the difference in the amount of heat required to increase the temperature of a sample and reference is measured as a function of temperature. Both the sample and reference are maintained at nearly the same temperature throughout the experiment. Generally, the temperature program for a DSC analysis is designed such that the sample holder temperature increases linearly as a function of time.


DSC can provide information about physical phenomena, such as:


  • Melting Point/Melting Range
  • Heat Capacity
  • Crystallization
  • Glass Transition
  • Thermal Stability
  • Decomposition Temperature
  • Oxidative Induction Times (OIT)
  • Purity