Sodium Metabisulfite

Sodium Metabisulfite is a widely used inorganic chemical compound with the chemical formula Na₂S₂O₅. It appears as a white to slightly yellow crystalline powder with a characteristic sulfur odor. Due to its strong reducing, antioxidant, and preservative properties, Sodium Metabisulfite is extensively used across multiple industries including food processing, water treatment, textile manufacturing, pharmaceuticals, and industrial processing.

In the Bangladesh market, Sodium Metabisulfite is commonly available in industrial grade and food grade, depending on the application. It is a high-demand chemical for factories and processing units that require effective oxidation control, microbial inhibition, and chlorine removal.

Chemical & Physical Characteristics

Sodium Metabisulfite is highly soluble in water and releases sulfur dioxide (SO₂) when dissolved. This property makes it effective as a reducing agent and preservative. It reacts readily with oxidizing agents and chlorine, which is why it is widely used in water treatment and industrial processing systems.

The product is stable under dry storage conditions but can decompose slowly in the presence of moisture and air. Proper handling and storage are important to maintain product quality.

Industry-Wise Applications

Water Treatment:
Sodium Metabisulfite is extensively used for dechlorination in water treatment plants, RO systems, and industrial water processing. It neutralizes residual chlorine and chloramine, protecting membranes and downstream equipment from chemical damage.

Food Processing (Food Grade):
In food applications, Sodium Metabisulfite is used as a preservative and antioxidant in dried fruits, juices, beverages, and processed foods. It helps prevent oxidation, discoloration, and microbial growth when used within permitted regulatory limits.

Textile Industry:
Textile mills use Sodium Metabisulfite as a reducing agent in dyeing and finishing processes. It is commonly applied in vat dyeing, sulfur dyeing, and bleaching neutralization, helping control oxidation and improve process stability.

Pharmaceutical & Chemical Processing:
The chemical is used in pharmaceutical manufacturing as an antioxidant and stabilizing agent. It is also used as a raw material or processing aid in various chemical reactions.

Pulp & Paper Industry:
In paper manufacturing, Sodium Metabisulfite is used for bleaching control and as a reducing agent during pulp processing.

Benefits for Manufacturers & Bulk Buyers

• Strong reducing and antioxidant properties

• Effective chlorine and chloramine neutralization

• Suitable for multiple industries and processes

• Available in industrial and food grade options

• Cost-effective solution for large-scale operations

• Reliable performance and easy solubility

For bulk buyers in Bangladesh, Sodium Metabisulfite offers versatility across industries, reducing the need to source multiple specialized chemicals. Its efficiency at relatively low dosages makes it economical for continuous industrial use.

Bangladesh Market Relevance

Bangladesh has a strong demand for Sodium Metabisulfite due to its wide usage in textiles, food processing, water treatment, and industrial manufacturing. Textile dyeing units, RO water plants, beverage factories, and food processors rely on consistent quality supply to maintain production efficiency.

Local sourcing ensures faster delivery, stable pricing, and compliance with local regulatory and industrial standards. Reliable suppliers help manufacturers avoid production delays and quality issues.

Storage, Handling & Shelf Life

Sodium Metabisulfite should be stored in tightly sealed bags or containers in a cool, dry, and well-ventilated area. Protect from moisture, heat, and direct sunlight. Under proper storage conditions, the product maintains good shelf life and chemical stability.

Safety & Usage Note

Sodium Metabisulfite is intended for industrial and professional use. Direct inhalation of dust and contact with eyes or skin should be avoided. Use appropriate personal protective equipment during handling. For food applications, only approved food-grade material should be used within permitted dosage limits.