Description Catalogue Number 109678 Synonyms Methanesulfinylmethane, Methyl sulfoxide, Dimethyl(oxido)sulfur, DMSO Description Dimethyl sulfoxide Product Information CAS number 67-68-5 EC number 200-664-3 Hill Formula C₂H₆OS Chemical formula (CH₃)₂SO Molar Mass 78.13 g/mol HS Code 2930 90 98 Structure formula Image Applications Application Dimethyl sulfoxide for gas chromatography. CAS 67-68-5, chemical formula (CH₃)₂SO. Physicochemical Information Boiling point 189 °C (1013 hPa) Density 1.10 g/cm3 (20 °C) Explosion limit 1.8 - 63.0 %(V) Flash point 87 °C Ignition temperature 300 - 302 °C Melting Point 18.5 °C Saturation concentration (air) 8.0 g/m3 (20 °C) Vapor pressure 0.6 hPa (20 °C) Viscosity kinematic 2.14 mm2/s Solubility 1000 g/l Toxicological Information LD 50 oral LD50 Rat 28300 mg/kg LD 50 dermal LD50 Rat 40000 mg/kg Safety Information according to GHS RTECS PV6210000 Storage class 10 - 13 Other liquids and solids WGK WGK 1 slightly water endangering Disposal 1 Strongly contaminated halogen-free organic solvents: container A. Storage and Shipping Information Storage Store at +5°C to +30°C. Transport Information Declaration (railroad and road) ADR, RID Kein Gefahrgut Declaration (transport by air) IATA-DGR No Dangerous Good Declaration (transport by sea) IMDG-Code No Dangerous Good Specifications Assay (GC) ≥ 99.7 % Identity (IR) conforms Water ≤ 0.3 %
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