■ Chemical Industry
In the synthesis of dye intermediates, surfactants, pesticides, herbicides, etc.
■ Pulp mills
In pulp mills in the production of sulphite pulp.
■ Sugar industry
In sugar industry to assure sterile conditions in diffusion and to decolorize thin juices.
■ Manufactur of caramel
In the manufactur of caramel colour E150d as a catalyst.
In photography as preservative and antioxidant agent in highly concentrated baths.
■ Drilling water
In drillin water (oil extracting industry), as oxygen scavenger.
■ Steam boiler
In steam boiler treatment to remove dissolved oxygen
In plating, as bath ingredient.