Manufacturing of bleaching chemicals Chlorine dioxide (ClO2) and hydrogen peroxide (H2O2) are the main chemicals used in the bleaching of chemical pulps.1,2 ClO2 is traditionally produced on site from sodium chlorate (NaClO3) by reducing with different reducing agents. The most commercially used reducing chemicals are sodium chloride (NaCl), methanol (CH3OH) and sulphur dioxide (SO2).3 Production
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