Chloramines refer to derivatives of ammonia and organic amines wherein one or more N-H bonds have been replaced by N-Cl bonds. Two classes of compounds are considered: inorganic chloramines and organic chloramines.
Chloramines are commonly produced by the action of bleach on secondary amines:
- R2NH + NaOCl → R2NCl + NaOH
- R2NH + t-BuOCl → R2NCl + t-BuOH
Chloramines also refers to any chloramine formed by chlorine reacting with ammonia introduced into swimming pools by human perspiration, saliva, mucus, urine, and other biologic substances, and by insects and other pests. Chloramines are responsible for the "chlorine smell" of pools, as well as skin and eye irritation. These problems are the result of insufficient levels of free available chlorine.
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