Main Applications Agricultural Field - Used as a nitrogen fertilizer, but its property of being easily decomposed at room temperature needs to be noted. In China, its production was optimized through the Union Carbide process. In the 1980s, its output accounted for more than half of the total nitrogen fertilizer production. - In rural areas, taking advantage of its property of reacting with hydrochloric acid to generate carbon dioxide, it is used to promote the photosynthesis of vegetables in greenhouses. Food Industry - Used as a leavening agent in baked foods such as biscuits and cakes. It releases carbon dioxide when heated, making the food fluffy. - It can also serve as a fermentation aid, dough improver, and preservative. However, the dosage needs to be controlled to avoid the residual ammonia smell.