Diacetone-D-mannitol is primarily used in the synthesis of specialty chemicals and polymers. It serves as a key intermediate in the production of crosslinking agents for coatings, adhesives, and resins, enhancing their durability and performance. In the pharmaceutical industry, it is utilized in the development of drug delivery systems due to its ability to form stable complexes. Additionally, it finds application in the food industry as a stabilizer and emulsifier, improving texture and shelf life of products. Its unique structure also makes it valuable in research for developing novel materials with specific properties.