Stability characteristics of aqueous chloramine-T solutions.
Aqueous chloramine-T solutions in strongly alkaline medium are quite stable even up to 60 degrees . In 0.2-2 M sulphuric or perchloric acid at 25-30 degrees , there is no loss in titre, but in hydrochloric acid solutions > 0-5M, there is a loss in titre which increases with increase in hydrochloric acid concentration. This is ascribed to oxidation of chloride to chlorine. In the pH range 2.65-5.65 there is a small but reproducible loss in oxidative titre which is maximal at pH 4.7. This is ascribed to side-reactions occurring during partial disproportionation of monochloramine-T to dichloramine-T and p-toluenesulphonamide.
Rao
V R
VR
Department of Chemistry Indian Institute of Technology Madras 36, India.
Venkappayya
D
D
Aravamudan
G
G