• pulp and paper industry – in processing of semi-chemical pulp production in chemi-thermo-mechanical and Kraft pulping process.
• water treatment – as an oxygen scavenger agent in Boiler water and drilling water
• photographic industry to protect developer solutions from oxidation and (as hypo clear solution) to wash fixer (sodium thiosulfate) from film and photo-paper emulsions,
• textile industry as a bleaching, desulfurizing and dechlorinating agent
• leather trade for the sulfitization of tanning extracts and anti bacterial in tanning process
• in chemical manufacturing as a sulfonation and sulfomethylation agent.
• in detergents for manufacture of sulfosuccinates
• in dyestuffs as reducing agent in manufacture of indigo-at dyes
• latex – for stabilizing latex  * minerals – ore floatation aid
• minerals – ore floatation aid
• Effluent water treatment of excess chlorine & detoxification of chromic acid in electroplating industry
• Food processing – as preservative, anti oxidant and enzyme inhibitor