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Dimethyl sulfoxide

A sample of dimethyl sulfoxideNames Preferred IUPAC name(Methanesulfinyl)methaneSystematic IUPAC name(Methanesulfinyl)methane (substitutive) Dimethyl(oxido)sulfur (additive)Other names Methylsulfinylmethane Methyl sulfoxide (2:1), DermasorbIdentifiers CAS Number67-68-53D model (JSmol)Interactive imageInteractive imageAbbreviations DMSO, Me2SO Beilstein Reference506008 ChEBICHEBI:28262ChEMBLChEMBL504ChemSpider659DrugBankDB01093ECHA InfoCard100.000.604EC Number200-664-3Gmelin Reference1556 KEGGD01043MeSHDimethyl+sulfoxidePubChemCID679RTECS numberPV6210000UNIIYOW8V9698HCompTox Dashboard(EPA)DTXSID2021735InChIInChI=1S/C2H6OS/c1-4(2)3/h1-2H3Key: IAZDPXIOMUYVGZ-UHFFFAOYSA-NInChI=1/C2H6OS/c1-4(2)3/h1-2H3Key: IAZDPXIOMUYVGZ-UHFFFAOYARSMILESCS(=O)CCS(C)=OProperties Chemical formulaC2H6OSMolar mass78.13 g·mol Appearance Colourless liquid Density1.1004g⋅cm Melting point19 °C (66 °F; 292 K) Boiling point189 °C (372 °F; 462 K) Solubility in waterMiscible Solubility in Diethyl etherNot soluble Vapor pressure0.556 millibars or 0.0556 kPa at 20 °C Acidity (pKa) 35 Refractive index (nD)1.479εr = 48 Viscosity1.996cP at 20 °C Structure Point groupCsMolecular shapeTrigonal pyramidal Dipole moment3.96DPharmacology ATC codeG04BX13 (WHO) M02AX03 (WHO) Hazards Occupational safety and health (OHS/OSH): Main hazardsIrritant NFPA 704 (fire diamond) 120Flash point89 °C (192 °F; 362 K) Safety data sheet (SDS) Sigma-Aldrich SDSRelated compounds Related sulfoxidesDiethyl sulfoxideRelated compoundsSodium methylsulfinylmethylide,Dimethyl sulfide,Dimethyl sulfone,AcetoneSupplementary data page Dimethyl sulfoxide (data page)Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).Yverify ( ?)

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