Stabilized chlorine

Stabilized chlorine refers to any compound that contains chlorine and will release reactive chlorine over time. A good example is dichlor - it is made of isocyanuric acid and two chlorine atoms. The attached chlorine is released slowly into the surrounding water in the form of hypochlorite (the active ingredient in bleach), providing a safer and more steady level of disinfection - adding hypochlorite directly would require either dangerously high concentrations or adding more disinfectant daily.