Product Name Dimethyl sulfoxide CAS 67-68-5 Formulae hypotheticae C2H6OS Pondus Molecularis 78.13 Aspectus hyalina perspicui liquoris liquefaciens Point 18.4 °F Fervens 189 °C(lit.) Density 1.100 g/mL at 20 °C Flash Point 192 °F 0.42 mm Hg * ( 20 °C) vapor densitas 2.7 (nobis aer)