Manganese Dioxide (MnO₂) is an essential oxidizing compound used in precious metal refining, smelting, and recovery processes. This fine 300-mesh powder is a high-purity industrial-grade reagent designed for consistent performance in gold and silver precipitation, flux preparation, and chemical refining reactions.
In refining, Manganese Dioxide acts as a powerful oxidizer, helping to break down base metals, remove impurities, and assist in converting dissolved precious metals back into solid form. It also serves as a catalyst and decolorizer, improving clarity and purity during recovery.
Key Benefits for Refiners
High-Purity Industrial Grade MnO₂ – ideal for refining, smelting, and metal purification
Consistent Fine Powder (300 Mesh) – mixes evenly with other chemicals and fluxes
Oxidizing Agent – assists in breaking down base metals and precipitating gold and silver
Catalyst and Scavenger – removes unwanted elements and color impurities in refining baths
Versatile Use – compatible with aqua regia, nitric-based, and alternative refining systems
Common Refining Applications
Gold and silver precipitation and purification
Flux component in high-temperature smelting operations
Oxidizer for removing trace impurities from solution
Catalyst in chemical reactions for metal recovery
Decolorizer and scavenger in refining baths and electrolytes
Product Details
Chemical Name: Manganese Dioxide
Formula: MnO₂
CAS Number: 1313-13-9
Mesh Size: 300 (fine powder)
Weight: 4 oz or 8 oz
Form: Black powder
Packaging: Moisture-resistant resealable bag
Country of Origin: USA
Additional Uses
While primarily valued in precious metal refining, MnO₂ also has wide applications in ceramic glazes, pigments, batteries, laboratory catalysts, and water purification.
Safety Note
For professional and industrial use only. Avoid inhalation and skin contact. Use in a well-ventilated area with appropriate protective gear.
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