TCCA 90 percent granular (90%) is a high-strength, stabilised chlorine disinfectant used across pools, spas, cooling towers, and municipal water lines. The white granules dissolve gradually, so a single dose keeps working long after liquid or powder chlorines have already burned off in the sun — which is why it’s the default choice for outdoor pools in Bangladesh’s climate.
The “90%” refers to available chlorine content: nearly triple what bleaching powder carries, and roughly nine times a typical liquid chlorine solution. That density is what lets 50 kg of granular do the disinfecting work of several drums of liquid stock, with far less to store and transport.