2,4-Pentanediol is widely used as a solvent in various industrial applications due to its ability to dissolve a range of substances. It is particularly effective in the formulation of coatings, paints, and varnishes, where it helps improve the flow and leveling properties of the final product. In the cosmetics and personal care industry, it serves as a humectant, helping to retain moisture in skin and hair care products. Additionally, it is utilized in the production of plasticizers, where it enhances the flexibility and durability of plastics. Its role as an intermediate in organic synthesis is also notable, contributing to the manufacture of pharmaceuticals and other specialty chemicals.