Overview
Copper Cyanide (CuCN) is an inorganic compound primarily used in industrial applications due to its unique chemical properties. It is a white to cream-colored powder that is insoluble in water but soluble in ammonia and alkali cyanide solutions. The compound is highly toxic and requires careful handling. First synthesized in the 19th century, Copper Cyanide has become a critical component in electroplating processes, particularly for depositing copper layers on various substrates. Its stability and reactivity make it valuable in both industrial and laboratory settings.
Physical and Chemical Properties
Copper Cyanide has a molecular weight of 89.56 g/mol and a density of 2.92 g/cm³. It decomposes at 474°C without boiling. The compound is insoluble in water but forms soluble complexes with ammonia and alkali cyanides, which are utilized in electroplating baths. Key chemical properties include its reactivity with acids, which releases highly toxic hydrogen cyanide gas. This necessitates strict safety protocols during handling. The compound is stable under normal conditions but can react violently with strong oxidizers, posing fire and explosion risks.
Main Applications
The primary use of Copper Cyanide is in electroplating, where it serves as a source of copper ions in cyanide-based plating baths. These baths are essential for depositing adherent copper layers on metals like steel, zinc, and aluminum, providing corrosion resistance and improved aesthetics. In organic synthesis, Copper Cyanide acts as a catalyst or reagent in reactions such as the Rosenmund-von Braun synthesis, which produces nitriles from aryl halides. Additionally, it is used in pesticide formulations and as a precursor for other copper compounds.
Safety and Storage
Due to its extreme toxicity, Copper Cyanide requires stringent safety measures. Workers must wear PPE, including gloves, goggles, and respirators, and handle the compound in well-ventilated fume hoods. Ingestion or inhalation can be fatal, and skin contact may cause irritation or systemic poisoning. Storage conditions include cool, dry environments away from acids, oxidizers, and moisture. Containers should be tightly sealed and labeled with hazard warnings. Spills must be neutralized with sodium hypochlorite (bleach) and reported to hazardous waste disposal teams.
B2B Procurement Guide
Industrial buyers should prioritize suppliers with certifications such as ISO 9001 or REACH compliance to ensure product quality and regulatory adherence. Bulk purchases (e.g., 25 kg drums or larger) often reduce costs, but verify the supplier's ability to meet demand consistently. Technical specifications to confirm include purity (typically 98-99.5%), particle size, and impurity profiles. Request Safety Data Sheets (SDS) and ensure logistics partners are trained in hazardous material transport. Sample testing is recommended for new suppliers.
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