5-CHLORO-2-METHYL-3(2H)-ISOTHIAZOLONE CALCIUM C* 5-Chloro-2-methyl-4-isothiazolin-3-one calcium(II) chloride 57373-19-0 Calcium, dichloro(5-chloro-2-methyl-3(2H)-isothiazolone-O)- Dichloro(5-chloro-2-methyl-3(2H)-isothiazolone-O)calcium