Functions, advantages and disadvantages of bleaching chemicals Chemical Function Pulp Advantag Disadvantages e Cl2 Oxidize andC Effective Organochlorine chlorinate economical delignification formation good particle removal highly corrosive Naocl Oxidize c Easy to make Can cause loss of decolorize. and and use: low pulp strength Ca(Ocl)2 solubilize lignin cost chloroform formation CIO 1)Oxide, c Achieve high Must be made on decolorize and brightness solubilize lignin without loss of site: cost: some 2)In small pulp strength;I organochlorine amounts with cI2 good particle formation; highly protects against bleaching corrosive cellulose degradationChemical Function Pulp Advantag e Disadvantages Cl2 Oxidize and chlorinate C Effective, economical delignification; good particle removal Organochlorine formation; highly corrosive NaOCl Ca(Ocl)2 Oxidize, decolorize, and solubilize lignin C Easy to make and use; low cost Can cause loss of pulp strength; chloroform formation ClO2 1)Oxide, decolorize and solubilize lignin 2) In small amounts with Cl2; protects against cellulose degradation C Achieve high brightness without loss of pulp strength; good particle bleaching Must be made on￾site; cost; some organochlorine formation; highly corrosive Functions, advantages and disadvantages of bleaching chemicals