Sodium Bisulphite (CAS 7631-90-5) Market

Overview
Sodium bisulphite (NaHSO₃), identified by CAS number 7631-90-5, is a chemical compound widely used as a reducing agent, preservative, and bleaching agent in multiple industrial applications. It is known for its strong antioxidant properties and ability to prevent microbial growth, making it useful in water treatment, food preservation, pulp and paper processing, leather tanning, and chemical synthesis. With its versatile chemical properties, sodium bisulphite plays a key role across end-use sectors including municipal water treatment, food processing, pharmaceuticals, and textiles. Increasing demand for clean water, safe food storage, and chemical intermediates continues to drive market growth globally.

Market Size and Growth
The global sodium bisulphite market was valued at approximately USD 420 million in 2024. It is projected to grow at a compound annual growth rate (CAGR) of 4.7%, reaching around USD 670 million by 2034. Market expansion is driven by rising applications in wastewater treatment, food and beverage preservation, and chemical manufacturing. Demand is particularly high in emerging economies where industrialization, urbanization, and regulatory requirements are accelerating.

Key Drivers

1. Rising Demand for Water Treatment Chemicals
   Sodium bisulphite is widely used in municipal and industrial wastewater treatment to remove excess chlorine and heavy metals. As water scarcity and pollution issues intensify, particularly in developing regions, the demand for effective and affordable water treatment solutions is increasing.
2. Growth in the Food and Beverage Industry
   As a preservative and anti-browning agent, sodium bisulphite is used to prolong shelf life and maintain the color and freshness of packaged foods, beverages, and juices. The rising global demand for processed and packaged foods supports continued use in food-grade applications.
3. Expanding Chemical and Pharmaceutical Sectors
   Sodium bisulphite is used as an intermediate in chemical synthesis and as a stabilizer in pharmaceutical formulations. The growth of these sectors, especially in Asia-Pacific, is contributing to higher product consumption.
4. Pulp and Paper Industry Growth
   In the paper industry, sodium bisulphite is used for bleaching wood pulp and as a reducing agent. As demand for paper-based packaging increases globally, its role in pulp processing remains critical.

Restraints

1. Health and Environmental Concerns
   Exposure to sodium bisulphite can cause respiratory and skin irritation. In large quantities, its release into the environment may pose ecological risks. These concerns have led to stricter regulations, particularly in food and water applications.
2. Availability of Substitutes
   Other preservatives and reducing agents such as sodium metabisulphite and sulfur dioxide offer similar properties and may be preferred in certain applications, especially where lower cost or better safety profiles are required.
3. Regulatory Challenges in Food Applications
   Due to potential allergic reactions in sensitive individuals, sodium bisulphite’s use in food products is heavily regulated. This limits its use in certain markets and requires strict compliance with food safety standards.

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Segmentation

1. By Grade

• Food Grade: Used as a preservative and antioxidant in food and beverages.
• Industrial Grade: Applied in water treatment, textiles, and chemical manufacturing.
• Pharmaceutical Grade: Utilized in specific drug formulations and chemical synthesis.

1. By Application

• Water Treatment: Dechlorination and removal of heavy metals in municipal and industrial wastewater.
• Food & Beverage: Preservative in dried fruits, pickles, juices, and canned vegetables.
• Chemicals: Used in the synthesis of dyes, fragrances, and stabilizers.
• Pharmaceuticals: Acts as a reducing agent and antioxidant in drug production.
• Textiles & Leather: Used in dyeing processes and leather tanning.
• Pulp & Paper: For bleaching and lignin breakdown during pulp processing.

1. By Region

• North America: Stable demand driven by industrial and municipal water treatment and food processing sectors.
• Europe: Strong regulations and sustainable practices drive product innovation and steady growth.
• Asia-Pacific: The largest and fastest-growing market due to rapid industrialization, high food production, and chemical manufacturing in China and India.
• Latin America: Moderate growth supported by expansion in food exports and municipal water treatment projects.
• Middle East & Africa: Increasing industrialization and water scarcity are spurring demand for effective water treatment chemicals.

Opportunities

• Eco-Friendly Formulations: Development of low-toxicity and environmentally safer variants offers long-term growth potential.
• Expansion in Emerging Economies: Infrastructure development and tightening environmental standards in developing countries provide untapped market potential.
• Growing Pharmaceutical Applications: Increased drug manufacturing and regulatory approvals open new avenues for pharmaceutical-grade sodium bisulphite.

Key Companies

• INEOS Enterprises
• Calabrian Corporation
• Arkema S.A.
• Hydrite Chemical Co.
• Aditya Birla Chemicals
• Shandong Kailong Chemical Technology Development Co., Ltd.
• Jacobi Carbons AB
• Chemical Initiatives (Pty) Ltd.
• Fengda Chemicals
• Descote

Conclusion
The sodium bisulphite (CAS 7631-90-5) market is positioned for steady growth, supported by strong demand in water treatment, food preservation, and chemical processing sectors. While regulatory and environmental challenges may limit usage in some applications, innovations in product safety and formulation are creating new opportunities. With industrial expansion, especially in Asia-Pacific and Latin America, and rising regulatory compliance in water and food sectors, the global market outlook remains positive over the next decade.

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