Sodium Bisulfite 40%

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Sodium Bisulfite 40%

A Versatile Chemical Agent:


Sodium Bisulfite 40% is a widely used solution, notable for its properties as a reducing and dechlorinating agent in various industrial and water treatment applications.


Chemical Properties:

Composed of Sodium Bisulfite in aqueous solution, this compound, with the chemical formula NaHSO3, is known for its strong reducing and antioxidant capabilities.


Appearance and Purity:

Sodium Bisulfite 40% is a clear to slightly yellow solution, with a distinctive sulfurous odor, indicating its concentration and purity.


Reactivity and Stability:

It is reactive with oxidizing agents and stable under normal storage conditions, but can decompose upon exposure to heat or acid.



This solution is widely utilized in water treatment, food and beverage processing, and in various industrial processes as a preservative and reducing agent.


Water Treatment:

In water treatment, Sodium Bisulfite 40% is used to remove excess chlorine and as a dechlorinating agent in wastewater.


Food Industry:

It serves as a preservative in the food industry, preventing oxidation and preserving color in a variety of food products.


Paper and Pulp Industry:

In the paper and pulp industry, it’s used in the pulping process and as an antioxidant agent.


Handling and Storage:

Due to its potential to release sulfur dioxide gas, particularly when heated or in contact with acids, proper handling and storage are essential.


Safety Precautions:

Use of appropriate personal protective equipment, such as gloves and goggles, and ensuring adequate ventilation are crucial to minimize exposure risks.


Storage Conditions:

It should be stored in a cool, well-ventilated area, away from incompatible materials, and in corrosion-resistant containers.



Sodium Bisulfite 40% is a key component in numerous applications due to its reducing and preservative qualities. Safe handling, storage, and disposal practices are necessary to effectively leverage its benefits while mitigating risks.