Overview
Potassium Gold Cyanide (PGC), often referred to as 'Gold Salt,' is a vital chemical in industries requiring gold plating. It is a coordination compound of gold, potassium, and cyanide, primarily used for its ability to deposit thin layers of gold onto surfaces. PGC is favored in the jewelry and electronics industries due to its consistent performance and ease of use in electroplating baths. Its high solubility in water makes it ideal for creating uniform gold coatings, which are essential for both aesthetic and functional purposes.
Physical and Chemical Properties
PGC appears as a white crystalline powder with a density of 3.45 g/cm³. It decomposes at around 200°C and is highly soluble in water, forming a stable solution for electroplating applications. The compound is stable under normal conditions but reacts violently with acids, releasing highly toxic hydrogen cyanide gas. This property necessitates careful handling and storage to prevent accidental exposure and environmental contamination.
Main Applications
The primary use of PGC is in electroplating, where it serves as a source of gold ions for depositing gold onto substrates. This is crucial in the jewelry industry for creating durable and attractive finishes. In electronics, PGC is used to plate connectors and other components to ensure excellent conductivity and corrosion resistance. Its ability to produce thin, uniform layers makes it indispensable in high-precision manufacturing processes.
Safety and Storage
Due to its high toxicity, PGC must be handled with extreme care. Workers should use personal protective equipment (PPE) such as gloves, goggles, and respirators to avoid inhalation or skin contact. Storage should be in a cool, dry place, away from acids and oxidizers. Spills must be managed with specialized procedures to prevent environmental harm and ensure worker safety.
B2B Procurement Guide
When procuring PGC, buyers should prioritize suppliers with robust safety and environmental compliance records. The purity of the compound is critical, as impurities can affect plating quality. Prices vary based on purity and market conditions, typically ranging from $50 to $100 per gram. Bulk purchases may offer cost advantages, but storage and handling requirements must be carefully considered.
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