Pulp and paper
In the production of pulp by sulphite semi-chemical
process and chemi-thermo mechanical means
Water treatment
As an antichlor
Boiler water
As an oxygen scavenger
Chemicals and drugs
A moderate reducing agent in the manufacture of
sodium thiosulphate, sulphonated chemicals, sulphomethylation,
and acetaminophen
Natural latex rubber
As a preservative
Photography
As a preservative
Food industry
As an antioxidant, enzyme inhibitor, and anti-microbial
Fibre industry
As a solvent for raw materials, an additive for
precipitation baths, for bleaching, and for desulphurising
bobbins
Chlor-alkali
To destroy chlorine in return brine
Leather industry
In the sulphitisation of tanning extract
Explosives
In the production of trinitrotoluene (TNT)
Minerals
Oil well flotation - oxygen scavenger
Detergents
In the manufacture of sulfosuccinates and shampoo
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