Differential Thermogravimetry (DTG) is a thermal analysis technique derived from Thermogravimetric Analysis (TGA) that focuses on the rate of weight change of a material as it is heated, cooled, or held at constant temperature. Instead of just showing how much mass is lost, DTG plots the first derivative of the TGA curve, making it easier to pinpoint the exact temperatures at which decomposition, oxidation, or evaporation events occur. This provides clearer identification of overlapping thermal processes and more accurate determination of onset, peak, and end temperatures. DTG is widely used in polymers, pharmaceuticals, food, and materials research to study stability, composition, and degradation mechanisms. By highlighting subtle changes in weight loss behavior, DTG offers more detailed insights than TGA alone, making it an important tool for both research and quality control.