Trichloroisocyanuric acid is an organic compound with the formula (C3Cl3N3O3). This white crystalline powder, which has a strong "chlorine odour," is sometimes sold in tablet or granule form for domestic and industrial use.
TCCA is a disinfectant, algicide and bactericide mainly for swimming pools. It is widely used in civil sanitation for pools and spas, preventing and curing diseases in animal husbandry and fisheries, fruit and vegetable preservation, wastewater treatment, as an algicide for recycled water in industry and air conditioning.