Page 76 - Pharmaceutical Analytical Chemistry III

2) Disinfection :
Chlorine (Cl2 )(and its compounds) is widely used
-Chlorine

-Monochloramine and Dichloramine
Cl2 + NH3 ⎯→ NH2Cl + HCl
Monochloramine

NH2Cl + Cl2⎯→ NHCl2 + HCl
Dichloramine

 Ammonia may be present in water or added as
solution NH4OH or (NH4)2SO4.