3-Methylsulfolane is primarily used as a solvent in various industrial and chemical processes due to its excellent solvency properties and thermal stability. It is particularly effective in applications involving the extraction and purification of aromatic hydrocarbons, such as benzene, toluene, and xylene, from petroleum streams. Its high polarity and ability to dissolve a wide range of organic compounds make it a valuable component in gas treatment processes, where it helps remove acidic gases like hydrogen sulfide and carbon dioxide from natural gas. Additionally, it is utilized in the formulation of specialty chemicals, coatings, and adhesives, where its stability and solvency enhance product performance. In the pharmaceutical industry, it serves as a reaction medium for synthesizing active pharmaceutical ingredients (APIs) due to its inertness and ability to maintain reaction integrity. Its low toxicity and environmental impact further broaden its applicability in sustainable chemical processes.