Endothermic blowing agents decompose by absorbing heat, producing gases such as carbon dioxide, nitrogen, and water vapor. These agents are typically blends of sodium bicarbonate, citric acid, or other carbonate compounds. They are widely used in the plastics industry for applications where lower processing temperatures and finer cell structures are preferred, such as in food packaging, medical devices, and consumer goods. Price trends for endothermic blowing agents have been generally stable, with modest increases over time reflecting inflation and energy costs. Compared to ADC, they are slightly less expensive per unit volume of gas produced but may offer greater value in precision applications. Demand from niche markets like bioplastics and recyclable packaging materials has kept margins healthy.