... : Colourless crystals, with a mild mercaptan odourChemical name :O,O-diethyl O-3,5,6-trichloro-2- pyridyl phosphorothioateM.p. : 42 ... ). In benzene 7900, acetone 6500, chloroform 6300, carbon disulfide 5900, diethyl ether 5100, xylene 5000, iso-octanol 790, methanol 450 (all ...