Other NameEthyl P-Toluene Sulfonate; P-Toluenesulfonic Acid Ethyl Ester; Ethyl Tosylate CAS No80-40-0 Molecular FormulaC9H12O3S Product UsageIt can be used in the manufacture of organic synthesis, and also can be used as intermediate of methylation reagent and sensitive material. It also is flexibilizer of cellulose acetate. Check-PointUnitSpecifications Appearance--Colorless To Light Yellow Liquid Purity% min98 Melting Pointâ?? min32 Water% max0.5 P-Toluenesulfonate% max0.2 P-Toluenesulfonyl Chloride% max0.3 Ash% max0.05