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| ECHA InfoCard | 100.003.704 |
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| Formula | C7H16O4S2 |
| Molar mass | 228.32 g·mol−1 |
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Sulfonmethane (sulfonomethane,sulfonal,acetone diethyl sulfone)[1] is a chemical compound first synthesized by Eugen Baumann in 1888 and introduced as ahypnotic drug by Alfred Kast later on, but now superseded by newer and safer sedatives.[2] Its appearance is either in colorless crystalline or powdered form. In United States, it is scheduled as aSchedule III drug in theControlled Substances Act.[3]
Sulfonal is prepared by condensingacetone withethyl mercaptan in the presence ofhydrochloric acid, the mercaptol (CH3)2C(SC2H5)2 formed being subsequentlyoxidized bypotassium permanganate. It is also formed by the action ofalcoholicpotash andmethyl iodide on ethylidene diethyl sulfine, CH3CH(SO2C2H5)2 (which is formed by the oxidation of dithioacetal withpotassium permanganate). Itcrystallizes inprisms melting at 125 C, which are practically insoluble in cold water, but dissolves in 15 parts of hot water and also inalcohol andether.
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