For professionals in the chemical industry, a thorough understanding of chemical properties and reliable sourcing channels is crucial. Sodium Metabisulfite (Na2S2O5), with its distinctive white crystalline powder appearance and CAS number 7681-57-4, is a compound of significant industrial importance. Manufactured through specific chemical reactions, its versatility spans across numerous applications, from food preservation to industrial chemical processes. As a leading chemical manufacturer in China, we aim to provide clarity on this compound and how to secure a dependable supply.

Chemical Properties and Manufacturing:

  • Appearance: Typically a white crystalline powder.
  • Chemical Formula: Na2S2O5.
  • Purity: Commonly available in food and industrial grades, with 97% minimum purity being a standard specification for industrial use.
  • Solubility: Soluble in water, with solubility increasing at higher temperatures. Its aqueous solution is acidic (pH 4.0-5.5).
  • Reactivity: Acts as a strong reducing agent, reacting with oxidizing agents and acids to release sulfur dioxide (SO2) gas.

The manufacturing process often involves the reaction of sulfur dioxide with sodium carbonate or sodium bisulfite solutions, followed by purification and drying stages to yield the final product. Ensuring the purity and consistency of Na2S2O5 is a testament to advanced manufacturing capabilities.

Key Applications:

  • Food Industry: Preservative, antioxidant, and bleaching agent.
  • Textile Industry: Bleaching agent and dye auxiliary.
  • Water Treatment: Dechlorinating agent.
  • Pharmaceuticals: Intermediate and purifying agent.
  • Other Industries: Used in rubber, leather processing, electroplating, and as a reducing agent in chemical synthesis.

For businesses looking to buy Sodium Metabisulfite, identifying a trustworthy supplier in China is key. We, as a manufacturer, offer high-quality 97% purity Sodium Metabisulfite and are committed to providing excellent customer service. Our strategic location allows for competitive pricing and efficient logistics. We support our clients by offering technical specifications, safety data, and flexible order quantities. When you need to source this essential chemical, consider our offerings for reliable quality and consistent supply. Contact us today to get a quote for your specific requirements and learn more about how we can be your preferred supplier.