Sodium Bisulfite (SBS)

Sodium Bisulfite (SBS) is a high quality solution used as a reducing agent as well as to remove chlorine in industrial applications.

• Effective in the removal of organic compounds from gas streams
• Uses include chrome reduction, chlorine reduction, peroxide reduction, silver halide reduction, bichromate reduction, and sulfonation agent 
• Easier to dose than SO2, lower corrosion potential than SO2, less pH impact to processes than SO2

The versatility of sodium bisulfite makes it a valuable chemical in various industries and applications, particularly in reducing and neutralizing oxidizing agents, and as a sulfonation agent in organic synthesis. Overall, sodium bisulfite is used in a variety of industries as a food preservative, water treatment agent, chemical reagent, photographic developing agent, and oil and gas industry additive.

Water Treatment

Sodium bisulfite is a highly effective dechlorination agent widely used in both municipal and industrial water treatment processes. Its primary role is to neutralize residual chlorine and other oxidizing agents, which is essential for protecting downstream equipment, biological treatment systems, and the environment.

In wastewater treatment, SBS is commonly applied after disinfection stages to remove excess chlorine before discharge, ensuring compliance with environmental regulations. In industrial settings, it is used to treat process water, cooling towers, and boiler feedwater, where chlorine can be corrosive or interfere with sensitive processes.

Beyond dechlorination, sodium bisulfite also plays a role in:

• Cyanide neutralization, particularly in mining and electroplating industries.
• pH reduction, due to its mildly acidic nature, which can help balance water chemistry.
• Oxygen scavenging, helping to prevent corrosion in closed-loop systems.

Food Preservation

Sodium bisulfite can be used as a peroxide reduction and commonly used as an antioxidant in the food industry to prevent the oxidation of fats and oils. It reacts with peroxides to neutralize them and prevent rancidity. Sodium bisulfite is used as a food preservative to inhibit the growth of microorganisms and prevent spoilage. It is used in a variety of foods, such as wine, beer, fruit juices, canned fruits and and vegetables.

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