2-METHYL-3(2H)-ISOTHIAZOLONE CALCIUM COMPLEX 2-Methyl-4-isothiazolin-3-one calcium chloride 57373-20-3 Calcium, dichloro(2-methyl-3(2H)-isothiazolone-O)- Caswell No. 195C EPA Pesticide Chemical Code 107102 Microbiocide 886 RH 30 RH 651 calcium chloride