Description General description Sodium dichloroisocyanurate dihydrate is a solid chlorine bleaching agent generally used as an alternative to sodium hypochlorite for water treatment. Application Calibration substance for the photometric determination of active chlorine. Guidelines for the analysis of waste water and surface water, Part 1; 28/3; Federal Department of Home Affairs 1982. Sodium dichloroisocyanurate dihydrate can be used as a chlorine source to convert alkoxyl-s-triazines into N-chlorinated alkoxy-s-triazines. Packaging 1 kg in poly bottle 50 g in poly bottle