The kinetics of the decomposition of N-chlorodiethanolamine in water were studied over the range PH 6.55-12.01. Its coefficient of absorption in water at various pH and its protonation constant are reported, and the mechanism of its formation and decomposition is discussed. Comparison of the stabilities of various N-chloramines shows that the OH group of N- chloroalcoholamines makes them less stable than other N-chloramines and that the ...