... free samples ISO certification water treatment chemical Trichloroisocyanuric Acid (TCCA) 90% tablet1. Water treatment: Swimming-pool, drinking water, industrial circulating-cooling ... Point2358. UN No.24689.Class5.110.CAS No.87-90-111. Active chlorine %≥ 90.012. Moisture%≤ 0.513. PH (1% solution)2 ... in cool, dry, well ventilated area. water treatment chemical tcca 90% tablet