Dimethyl sulfoxide  ( DMSO ) is an organosulfur compound with the formula (CH 3 ) 2 SO. This colorless liquid is an important polar aprotic solvent that dissolves both polar and nonpolar compounds and is miscible in a wide range of organic solvents as well as water. It has a relatively high boiling point. DMSO has the unusual property that many individuals perceive a garlic-like taste in the mouth after contact with the skin.

In terms of chemical structure, the molecule has idealized Cs symmetry. It has a trigonal pyramidal molecular geometry consistent with other three-coordinate S(IV) compounds, with a nonbonded electron pair on the approximately tetrahedral sulfur atom.

Dimethyl sulfoxide is a transparent liquid containing sulfur compounds. It is widely used in the fields of petroleum, chemical industry, metallurgy, electronics, coatings and polymer materials. The prospect of application and development is very broad.

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