SINOMER® EMP-62,chemically known asethanethiol, Ethylmercaptan, is obtained by replacing the oxygen atom in the ethanol structure with sulfur.SINOMER® EMP-62 is a colorless, transparent, volatile, high toxic oily liquid that is slightly soluble in water, easily soluble in alkali solutions and organic solvents, and has a strong, persistent and irritating garlic odor. It is usually added to coal gas as an odor indicator.