A dechlorinator is a chemical additive that removes chlorine or chloramine from water. The chlorine and ammonia react to form chloramine. The most common disinfectants used are chlorine and chloramine. Many municipalities have moved from free chlorine to chloramine as a disinfection agent. Mixing bleach with ammonia similarly produces toxic chloramine gas, which can burn the lungs. Additives are available to remove chlorine or chloramine and suffice to make the water ready. Chloramine, like chlorine, can be removed by boiling and aging. There are many similarities between chlorine and chloramine. However, time required to remove chloramine is much longer than that of chlorine. Upon treatment with calcium hypochlorite, piperidine convert to N-chloropiperidine, the chloramine with the formula CHNCl. Chloramine disinfection is used in both small and large water treatment plants. Chloramination is the treatment of drinking water with a chloramine disinfectant. Chloramine is used as a disinfectant for water. This water is treated with chloramine and ozone. Chloramine is toxic to fish and amphibians.