Trichloroisocyanuric acid(TCCA) is a swimming pool disinfectant commonly used in swimming places. It can effectively disinfect water and increase the chlorine in the water to a certain extent, so that the water remains clear. However, sometimes TCCA does not increase the residual chlorine in the water. Why is this?
When TCCA is dissolved in water, it will hydrolyze, resulting in disinfected residual chlorine, hypochlorous acid-HCLO and cyanuric acid. When cyanuric acid is accumulated too high, the hypochlorous acid produced by adding TCCA to the pool will react with cyanuric acid to form a stable The intermediate product, cyanuric acid, cannot be decomposed as a stabilizer. At this time, the residual chlorine we detected will be low or even undetectable. This is what we call stabilised chlorine (chlorine lock).
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Post time: Jan-31-2019