Kolkata Chemical: Leading Sodium Phosphite Supplier, Manufacturer, and Distributor in India

Kolkata Chemical: Leading Sodium Phosphite Supplier, Manufacturer, and Distributor in India


 Kolkata Chemical takes immense pride in being a prominent supplier, manufacturer, and distributor of high-quality Sodium Phosphite chemicals in India. With a strong commitment to excellence, reliability, and customer satisfaction, we have established ourselves as a trusted partner in the chemical industry.

Product Details: 

  • CAS NO: 7632-04-4
  • Formula: Na3PO3

Product Description: Sodium Phosphite is a white crystalline compound that is highly soluble in water. It is widely utilized in various industrial applications due to its exceptional chemical properties and versatile nature.

Usage and Application: Sodium Phosphite finds extensive application across multiple industries, including agriculture, water treatment, pharmaceuticals, industrial chemicals, food preservation, and textiles. It serves as a fertilizer, plant growth promoter, water purifier, pharmaceutical ingredient, reducing agent, and preservative.

Product Parameters:

  • Grade Standard: Industrial Grade
  • Certification: ISO 9001:2015
  • Purity: 99% minimum
  • Appearance: White crystalline powder
  • Molecular Formula: Na3PO3
  • Molecular Weight: 163.94 g/mol
  • Melting Point: 72-74°C
  • Boiling Point: Decomposes


  1. Chemical Composition:
    • Sodium Phosphite (Na3PO3): 99% min
    • Sodium Carbonate (Na2CO3): 0.5% max
    • Sodium Sulfate (Na2SO4): 0.2% max
    • Iron (Fe): 10 ppm max
    • Heavy Metals (as Pb): 10 ppm max
  2. Solubility:
    • Soluble in water (100 g/L at 20°C)
    • Insoluble in organic solvents
  3. pH Value (1% Solution): 10-11
  4. Moisture Content: 0.5% max
  5. Particle Size Distribution:
    • Average Particle Size: 100-200 mesh
    • D50 (Median Particle Size): 150 microns

Our Advantages:

  1. High-Quality Products: We ensure the delivery of Sodium Phosphite chemicals that meet stringent quality standards and comply with industry norms.
  2. Extensive Range: We offer a comprehensive range of Sodium Phosphite products to cater to diverse customer requirements.
  3. Reliable Supply Chain: With a robust distribution network, we ensure prompt and timely delivery of products across India and major cities worldwide, including Dubai, Abu Dhabi, Riyadh, Doha, London, New York, Tokyo, and Sydney.
  4. Technical Expertise: Our team of experienced professionals possesses in-depth knowledge and expertise in the chemical industry, enabling us to provide excellent technical support and assistance.
  5. Customer-Centric Approach: We prioritize customer satisfaction and strive to provide exceptional service and support throughout the entire transaction process.

Company Overview: Kolkata Chemical is a leading chemical company based in Kolkata, India. We specialize in the manufacturing, supplying, and distribution of high-quality Sodium Phosphite chemicals. With a strong focus on quality control and customer satisfaction, we have become a preferred choice for numerous industries across the globe.

Packing: Sodium Phosphite is carefully packed in standardized packaging options such as 25 kg bags and 500 kg jumbo bags to ensure its safe transportation and storage, preventing any damage or contamination during transit.

Plant Area: Our modern manufacturing plant, located in Kolkata, boasts a vast production area equipped with advanced machinery and cutting-edge technology. This facilitates efficient production processes and enables us to meet bulk orders without compromising on quality.

Terms of Payment: We offer flexible payment terms to our valued customers, including options such as Letter of Credit (L/C), Bank Transfer (T/T), and online payment gateways. Our dedicated sales team will provide detailed information regarding payment options during the order process.

Nearest Port: For international shipments, we operate through various ports, including Kolkata Port Trust, Jawaharlal Nehru Port Trust (JNPT), Chennai Port, and Mundra Port, ensuring convenient logistics and smooth export processes.

Import & Export Mode: Kolkata Chemical operates on both import and export modes, catering to global demands for Sodium Phosphite. We have established strong partnerships and collaborations with clients in the Middle East, North America, Europe, and Asia, making us a reliable source for Sodium Phosphite worldwide.

Kolkata Chemical is your trusted partner for high-quality Sodium Phosphite chemicals. With a customer-centric approach, technical expertise, and a robust supply chain, we ensure the timely delivery of premium products to customers across India and major cities worldwide. Contact us today to discuss your Sodium Phosphite requirements and experience our commitment to quality and customer satisfaction.

For inquiries and orders, please contact us at Email-


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