Sodium Cyanide Briquettes
Sodium Cyanide Briquettes (NaCN) are a highly potent chemical, primarily used in mineral extraction, known for their efficiency in gold and silver recovery.
Description
Sodium Cyanide (NaCN) is an inorganic chemical compound that is a white, crystalline, hygroscopic solid. It is soluble in water and slightly soluble in alcohol. With a molecular weight of 49.01 g/mol and a melting point of approximately 563 °C, NaCN is a strong reducing agent. It is commercially available in briquette form, which aids in controlled dissolution and handling, mitigating dust formation. The briquettes are produced through a synthesis reaction, typically involving hydrogen cyanide and sodium hydroxide. Its primary industrial utility stems from its ability to form stable complexes with various metal ions, particularly gold and silver, making it indispensable in hydrometallurgical processes. Handling of sodium cyanide requires stringent safety protocols due to its high toxicity. It dissociates in aqueous solutions to yield cyanide ions, which are highly reactive and form hydrogen cyanide gas upon reaction with acids, posing significant inhalation hazards.
Applications
Sodium Cyanide is overwhelmingly used in the mining industry for the extraction of precious metals, notably gold and silver, through the cyanidation process. This method involves dissolving the noble metals from their ores, subsequently allowing for their recovery. Beyond its primary role in mineral processing, it finds limited use in organic synthesis as a source of cyanide ion for nitriles and other organic compounds. Historically, it has been employed in electroplating, particularly for gold and silver plating, to form stable complex ions that facilitate uniform deposition. It also has niche applications in some analytical chemistry procedures and in certain specialized chemical manufacturing processes.
Storage & Handling
Store in a cool, dry, well-ventilated area, away from acids and incompatible materials. Keep containers tightly closed. Handle with appropriate personal protective equipment, ensuring adequate ventilation and preventing contact with skin, eyes, and clothing. Avoid dust formation.
Danger
- H301 Toxic if swallowed
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