Dimethyl sulfoxide is a widely used non proton polar solvent and chemical raw material, mainly used as a spinning solvent for polyacrylonitrile polymers. Used as a solvent for polyurethane synthesis and spinning, as well as for the synthesis of polyamide, polyimide, and polysulfone resins. It is also used as a polymerization and condensation solvent for acrylic resins and polysulfone resins, as well as a polymerization and spinning solvent for acetic acid fibers. Used as a solvent for organic synthesis reactions, especially suitable for nucleophilic substitution reactions and redox reactions. It has high selective extraction ability and is used as an extraction solvent for aromatic hydrocarbons, butadiene extraction, and separation of alkanes and aromatic hydrocarbons. Used as an absorbent for recycling acetylene and sulfur dioxide. DMSO itself has anti-inflammatory, analgesic, diuretic, sedative and other effects, and can be directly used as a raw material and carrier for certain drugs. It has extremely strong penetration ability on the skin, which helps drugs penetrate into the human body, and is one of the earliest transdermal penetration enhancers used. Used as an osmotic protectant in cell biology, it can lower the freezing point of cells and reduce ice crystal formation. Electronic grade DMSO is used for cleaning semiconductor chips and circuit boards, which can remove photoresist residue, oil stains, and metal ion impurities. In lithium battery manufacturing, it can be used as a dispersant for electrode materials. As a solvent and additive for pesticides, insecticides that are difficult to dissolve in other solvents are easily soluble in DMSO, which can enhance their efficacy. Used as a solvent for dyes and pigments, it can improve their stability. Used as a paint remover, particularly adept at removing epoxy coatings. Used as an additive for antifreeze and brake oil, it can lower the freezing point of liquids. Used as analytical reagent, gas chromatography stationary phase, and UV spectroscopic analysis solvent. Used as a dyeing solvent, dye remover, dyeing carrier, and rust inhibitor for synthetic fibers.