C2H6SO

C2H6SO, commonly known as dimethyl sulfoxide (DMSO), is an organosulfur compound that belongs to the sulfoxide class. The molecule features two methyl groups attached to a sulfoxide functional group (S=O), giving it a polar, highly solvating character. It is widely used under the abbreviation DMSO.

DMSO is a colorless, hygroscopic liquid that is miscible with water and many organic solvents. It has a high boiling point of about 189°C and a density around 1.100 g/mL at room temperature. It is valued for its strong ability to dissolve a broad range of inorganic and organic compounds and for its relatively low flammability compared with some other high-boiling solvents.

Industrially, DMSO is produced mainly by the oxidation of dimethyl sulfide. It is a versatile polar aprotic solvent used in organic synthesis, polymer chemistry, electrochemistry, and biochemical applications. Notable uses include the Swern oxidation as a reagent, dissolution of difficult substrates, and serving as a cryoprotectant for cells and tissues in biological sample preservation.

Safety and handling: DMSO has relatively low acute toxicity but can cause skin and eye irritation. It can enhance the dermal absorption of other substances, so appropriate protective equipment is advised. It is not highly flammable, but should be stored away from strong oxidizers and kept under standard laboratory safety practices.