Sodium cyanide, or NaCN, is a white, water-soluble salt commonly used in various industrial applications. It is primarily known for its role in the extraction of gold and silver from ores, where it forms a complex with the metals, allowing for their separation and recovery. In addition to mining, NaCN is also utilized in the production of organic chemicals and as a reagent in laboratories. However, it is highly toxic and poses significant health risks, making proper handling and safety precautions essential in its use and storage.