Dimethyl sulfoxide is a sulfur-containing organic compound, the molecular formula is C2H6OS, at room temperature is colorless odorless transparent liquid, is a hygroscopic flammable liquid. With high polarity, high boiling point, good thermal stability, aprotic, and water miscible characteristics, can dissolve in ethanol, propanol, benzene and chloroform and other most organic matter, known as "universal solvent". In the presence of acid, heating will produce a small amount of methyl mercaptan, formaldehyde, dimethyl sulfur, mesylate and other compounds.
Decomposition phenomenon at high temperatures, chlorine can occur violent reaction, burning in the air issued a light blue flame. It can be used as organic solvent, reaction medium and intermediate of organic synthesis. It can also be used as dyeing solvent, stain remover, dyeing carrier and absorbent for recovering acetylene and sulfur dioxide of synthetic fibers.
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