Propandiol is widely used as a solvent in various industries, including pharmaceuticals, cosmetics, and food. In pharmaceuticals, it serves as a carrier for active ingredients in oral, topical, and injectable medications, enhancing their stability and solubility. In cosmetics, it acts as a humectant, helping to retain moisture in skin and hair products, and as a solvent for fragrances and dyes. In the food industry, it is utilized as a food additive (E1520) to maintain moisture, stabilize textures, and blend ingredients effectively. Additionally, propandiol is employed in the production of unsaturated polyester resins, which are used in coatings, adhesives, and composite materials. Its low toxicity and versatile properties make it a valuable component in numerous applications.