Zinc dicyanide

Zinc dicyanide is an inorganic chemical compound with the molecular formula C2N2Zn and CAS number 557-21-1. This compound has a molecular weight of 117.4 g/mol and belongs to the family of metal cyanides. It is classified as highly toxic and dangerous to aquatic environments, requiring strict safety protocols during handling and use in industrial applications.

Zinc dicyanide is a solid crystalline compound at room temperature, typically appearing as a white to off-white powder. Like most cyanide compounds, it is soluble in water and polar solvents. The compound is stable under normal conditions but can decompose when heated, potentially releasing toxic hydrogen cyanide gas. Its molecular structure consists of zinc coordinated with two cyanide groups.

Zinc dicyanide is primarily used in electroplating applications as a source of zinc ions in cyanide-based plating baths. It serves as an intermediate in chemical synthesis and is utilized in the production of other zinc-containing compounds. The compound may also find applications in analytical chemistry and specialized industrial processes requiring precise zinc coordination chemistry.

Zinc dicyanide requires extreme caution due to its Acute Tox. 1 and 2 classifications. Personnel must wear full personal protective equipment including chemical-resistant gloves, safety goggles, and respiratory protection. Work should be conducted in well-ventilated areas or under fume hoods. Avoid contact with acids which can generate deadly hydrogen cyanide gas. Emergency shower and eyewash stations must be readily accessible.

Zinc dicyanide must be stored in tightly sealed containers in a cool, dry, well-ventilated area away from incompatible materials. Keep away from acids, strong oxidizers, and heat sources to prevent decomposition and toxic gas formation. Storage areas should be secured with restricted access due to the compound's high toxicity. Containers should be clearly labeled with appropriate hazard warnings and safety information.

Zinc dicyanide exposure requires immediate medical attention due to its extreme toxicity. For skin contact, remove contaminated clothing and wash affected area with plenty of water for at least 15 minutes. In case of inhalation, move victim to fresh air immediately and provide oxygen if breathing is difficult. For eye contact, flush with water for 15 minutes. Seek immediate medical care in all exposure cases.

Zinc dicyanide disposal must comply with local and international hazardous waste regulations due to its high toxicity and environmental hazard classification. The compound cannot be disposed of in regular waste streams and requires specialized treatment by licensed hazardous waste disposal facilities. Neutralization or detoxification procedures must be performed by qualified professionals to prevent environmental contamination and cyanide poisoning risks.

Zinc dicyanide is classified under ADR Class 6.1 (Toxic substances), Packing Group I, indicating its highest level of toxicity for transport purposes. It requires specialized packaging meeting UN specifications and must be accompanied by proper shipping documentation including safety data sheets. Only trained personnel and certified carriers should handle transportation, following strict dangerous goods transport regulations throughout Europe.

Zinc dicyanide is subject to strict regulations under CLP (Classification, Labelling and Packaging) regulation due to its high toxicity classifications. While not currently listed as an SVHC under REACH, it requires compliance with standard registration and safety requirements. The compound's transport, use, and disposal are regulated under various European directives governing toxic substances and environmental protection.

Zinc dicyanide is available through specialized chemical distributors in Europe, including OYSI, which supplies high-quality chemical products to industrial customers. Due to the compound's extreme toxicity and regulatory requirements, purchases typically require proper documentation, safety certifications, and compliance with local regulations. Professional customers should contact OYSI directly to discuss specific requirements, quantities, and delivery options for this controlled substance.