Dimethylthiomethane English alias: bis(methylsulfanyl)methane; Formaldehyde Dimethyl Mercaptal; Methylenebis(methyl Sulfide); Dimethylthiomethane,Formaldehyde dimethyl mercaptal; Bis(Methylthio)Methane CAS No.: 1618-26-4 Molecular weight: 108.22 Appearance and traits: liquid Density: 1.059 g/mL at 25 °C (lit.) Melting point: -20.5oC Boiling point: 147 °C (lit.) Flash point: 111 °F Refractive index: n20/D 1.53 (lit.)