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Differential Thermal Analysis (DTA)

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Differential Thermal Analysis (DTA)

In the process of heating or cooling, when the material reaches a certain temperature, it will produce physical or chemical changes, accompanied by endothermic and exothermic phenomena, reflecting the change in the enthalpy of the material system. Differential thermal analysis uses this feature to identify substances or determine the composition structure, conversion temperature, thermal effect and other physical and chemical properties by measuring the temperature difference between the sample and the reference material as a function of time. As a professional reliability third-party testing organization, T,C&A Lab can provide DTA testing service according to ISO, ASTM standards and industry requirements. Welcome to contact our experts for consultation.

Analysis and testing capabilities of DTA

  • Melting and crystal transition
  • Analysis and study on redox reaction
  • Study on cracking reaction Analysis
  • Qualitative analysis

Application ranges of DTA

  • Hydration will generate heat absorption for substances containing adsorbed water, crystal water or structured water when they lose water during the heating process, forming an endothermic peak on the differential thermal curve.
  • Some chemical substances, such as carbonates, sulfates and sulfides, have an endothermic effect due to the release of CO2, SO2 and other gases during the heating process, which appear as endothermic peaks on the differential thermal curve. Different types of substances emit gases at different temperatures, and the shape of the differential thermal curve is also different. Using this feature, different types of substances can be distinguished and identified.
  • The minerals contain variable valence elements, which are oxidized at high temperature, changing from low valence elements to high valence elements and releasing heat, which shows an exothermic peak on the differential thermal curve. With different valence elements and different conditions in the lattice structure, the temperature of exothermic effect caused by oxidation is also different.
  • Some amorphous substances are accompanied by recrystallization in the heating process, which gives off heat and forms an exothermic peak on the differential thermal curve. In addition, if the lattice structure of the material is destroyed in the heating process, and the lattice reconstruction occurs after the material becomes amorphous, an exothermic peak is also formed.
  • In the process of heating, some substances absorb heat due to the transformation of crystal form, and form endothermic peaks on the differential thermal curve. Therefore, it is suitable for the analysis and identification of metals or alloys and some inorganic minerals.

Our case studies include, but are not limited to

  • ASTM E967-18, ASTM D6370, ASTM E1131, ASTM E1582, ASTM E2440, ASTM E1641, ASTM E1868, ASTM E1877, ASTM E2008, ASTM E2402, ASTM E2403, ASTM E2550
  • ISO 11358

In addition, the experts in our Differential Thermal Analysis (DTA) Laboratory also provide a variety of custom services as your needs and requirements. Let's discuss the custom services with our experts for free.

Instruments and data

Differential Thermal Analysis (DTA)
Differential Thermal Analysis


  1. Huang, R.; et al. A water-free metal organic deposition method for YBa2Cu3O7− δ thin film fabrication. Superconductor Science and Technology 26.11 (2013): 115010.

Note: the service is for research use only and not intended for any clinical use.


T,C& A LAB is an independent lab providing quality or custom testing, characterization and analysis of a variety of materials. Our engaged experts are ready to help you.

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