Food Grade Sodium Metabisulfite Na2S2O5 - Wine Antioxidant and Water Dechlorinator Preservative E223

Sodium metabisulfite (Na₂S₂O₅) is a highly effective sulfite compound appearing as white or slightly yellowish crystalline powder with a characteristic sulfur dioxide odor. This versatile chemical serves as a strong reducing agent, preservative, and antioxidant with critical applications across multiple industries.

• Preservation and Antioxidant (E223) - Complies with international standards including GB 1886.44
• Fruit and Vegetable Products - Prevents enzymatic and non-enzymatic browning in dried fruits, vegetables, and potato products
• Wine and Fruit Wine Making - Functions as antioxidant and antimicrobial agent to prevent spoilage
• Sugar Processing - Provides decolorization and bleaching for white sugar and starch syrups
• Seafood Processing - Prevents black spot formation in shrimp

• Reverse Osmosis System Protection - Standard residual chlorine scavenger protecting RO membranes
• Aquaculture and Aquariums - Removes residual chlorine from tap water for aquatic life safety
• Wastewater Treatment - Treats chromium-containing wastewater and neutralizes industrial effluent

• Textile Dyeing and Printing - Functions as reducing agent, antichlor, and discharging agent
• Leather Tanning - Used in depilation and post-tanning processes
• Chemical Synthesis - Participates in organic synthesis for products like hydroxylamine and Vitamin C
• Mineral Flotation - Acts as depressant or activator for metal ores
• Photography - Additive in traditional darkroom fixing baths

• Pharmaceutical Industry - Serves as antioxidant excipient or production intermediate
• Flue Gas Desulfurization - Small-scale environmental applications

Available in Food Grade and Industrial Grade formulations. Food-grade products feature stringent limits for SO₂ content, heavy metals (lead, arsenic), selenium, and other impurities.

• Food Application Limits - Must adhere to regulated maximum usage levels to prevent excessive SO₂ residues
• Personal Protection - Dust is irritating to eyes and respiratory tract; protective equipment required during handling

Our sodium metabisulfite features high purity, stable SO₂ content, good solubility, and extremely low impurity levels. Food-grade products comply with Chinese and international regulatory standards.

We supply exclusively to qualified food and beverage manufacturers, wineries, water treatment companies, chemical plants, dyeing mills, and pharmaceutical enterprises. Each batch includes:

• Certificate of Analysis (CoA)
• Material Safety Data Sheet (MSDS)

Professional application guidance and technical support available for all clients.