Which among the following is used as an oxidizing agent to bleach wood pulp into white paper?
Which among the following is used as an oxidizing agent to bleach wood pulp into white paper?
$\mathrm{Mn}(\mathrm{OH})_{2}$
$\mathrm{Cl}_{2}$
$\mathrm{H}_{2} \mathrm{O}_{2}$
$\mathrm{NaOCl}$
Solution
\(\mathrm{Cl}_{2}\) (Chlorine) is a bleaching chemical used to turn wood pulp into white paper.
A bleaching agent is a chemical that has the ability to whiten or decolorize other materials. The amount of organochloride chemical produced is reduced when chlorine dioxide is used.
Chlorine dioxide is used in ECF bleaching
sequences to make around \(95 \%\) of all bleached Kraft pulp.