The Sodium Metabisulfite collection at BVV features high-purity technical and food-grade powders, engineered for critical reducing and antioxidant applications. In the specialized field of precious metal refining, Sodium Metabisulfite is the premier selective precipitant, used to efficiently "drop" dissolved gold from Aqua Regia solutions into a high-purity metallic powder.
Beyond refining, this versatile inorganic salt is a powerful dechlorination agent for water treatment and an essential antioxidant in botanical processing to prevent oxidation and preserve product integrity. BVV provides scalable inventory to support both boutique refining shops and large-scale industrial facilities, with packaging ranging from individual jars and cases to bulk 50lb bags and full pallets. Centrally located in Glendale Heights, Illinois, we ensure your operation stays productive with rapid, compliant shipping and full technical documentation.
How is Sodium Metabisulfite used to refine gold?
In the refining process, Sodium Metabisulfite acts as a reducing agent. When added to a filtered Aqua Regia solution containing dissolved gold, it reduces the gold ions into solid metallic particles (gold mud), which can then be filtered, washed, and melted into high-purity bullion.
Is Sodium Metabisulfite the same as Sodium Bisulfite?
While they are chemically related and often used for similar purposes, Sodium Metabisulfite (Na2S2O5) is the anhydrous form and is generally more stable and concentrated than Sodium Bisulfite, making it the preferred choice for industrial shipping and storage.
Is your Sodium Metabisulfite Food Grade?
We carry various grades, including food-grade (FCC) specifications. Food-grade Sodium Metabisulfite is commonly used as an antioxidant and preservative in dried fruits, wines, and juices to prevent browning and microbial growth.
Can it be used for water dechlorination?
Yes. Sodium Metabisulfite is highly effective at neutralizing residual chlorine in water treatment systems, protecting sensitive reverse osmosis (RO) membranes and ensuring compliant discharge of process water.
What are the safety risks of handling this powder?
Sodium Metabisulfite can release sulfur dioxide gas if it comes into contact with acids or water. Always work in a well-ventilated area and wear appropriate PPE, including gloves, safety goggles, and a dust mask to avoid inhalation of fine particles.
How should Sodium Metabisulfite be stored?
Store in a cool, dry place in an airtight container. Exposure to moisture will cause the product to oxidize and lose its reducing strength over time. Keep it away from strong acids to prevent the release of hazardous gases.
Do you offer 50lb bags and bulk pallets?
Absolutely. We specialize in industrial-scale supply. Wholesale pricing is available for 50lb bags and full-pallet quantities. Contact our sales team for custom freight quotes and tiered pricing for high-volume users.
Is it considered a hazardous material for shipping?
Sodium Metabisulfite is generally classified as non-hazardous for ground shipping in most quantities, but it is an irritant. We ensure all packaging is secure and compliant with safety regulations to ensure safe arrival at your facility.
What is the shelf life of your Sodium Metabisulfite?
When stored in original, sealed packaging in a dry environment, Sodium Metabisulfite has a shelf life of approximately 1 to 2 years before its effectiveness as a reducing agent begins to diminish.
Why is shipping faster from BVV’s Illinois hub?
Our Glendale Heights location is a major logistics advantage. We can deliver chemicals to the East Coast and Midwest significantly faster than West Coast suppliers, helping you maintain a "just-in-time" inventory for your refining or processing needs.