Molecular Formula: (CH3)2SO; GR (AR) grade; CAS No.: 67‐68‐5; Purity: >99.0% (GC); Density (20oC): 1.099~1.103g/ml; Water: max. 0.05%; Freezing point: min. 18oC; Refractive index nD20: 1.477~1.480