Zirconium

Zirconium is a metallic chemical element with the symbol Zr and atomic number 40. It appears as a lustrous, grey-white, strong transition metal that resembles hafnium and titanium. With a molecular weight of 91.22 g/mol, zirconium is highly resistant to corrosion and is classified as a pyrophoric solid and water-reactive substance, requiring careful handling due to its potential fire and explosion hazards when finely divided.

Zirconium is a solid metal at room temperature with a silvery-white lustrous appearance and no characteristic odor. It has excellent corrosion resistance, particularly in acidic environments, and is insoluble in water but reacts with water when finely divided or heated. The metal has a high melting point of 1855°C and demonstrates exceptional strength and ductility, making it valuable for high-temperature applications.

Zirconium is primarily used in nuclear reactor fuel rod cladding due to its low neutron absorption and excellent corrosion resistance. It serves in chemical processing equipment, particularly for handling corrosive substances, and in aerospace applications for high-temperature components. Additionally, zirconium finds use in dental and medical implants, ceramics production, and as an alloying agent to improve the properties of other metals in specialized industrial applications.

Zirconium requires careful handling due to its pyrophoric and water-reactive properties, particularly in powder form. Wear appropriate personal protective equipment including safety goggles, protective gloves, and respiratory protection to avoid inhalation. Work in well-ventilated areas away from ignition sources, water, and incompatible materials. Use non-sparking tools and ground all equipment to prevent static discharge. Keep the material dry and avoid creating dust clouds during handling operations.

Zirconium must be stored in a cool, dry, well-ventilated area away from water, moisture, and incompatible materials. Keep containers tightly closed and use appropriate packaging that prevents contact with air and humidity. Store away from heat sources, ignition sources, and oxidizing agents. Ensure storage areas are equipped with appropriate fire suppression systems and maintain proper segregation from other reactive chemicals to prevent dangerous reactions.

Zirconium contact requires immediate action depending on exposure type. For skin contact, remove contaminated clothing and wash the affected area thoroughly with soap and water. If inhaled, move the person to fresh air and seek medical attention if breathing difficulties occur. In case of eye contact, flush immediately with plenty of water for at least 15 minutes. For any significant exposure or if symptoms develop, seek immediate medical attention.

Zirconium disposal must comply with local, national, and international waste regulations due to its hazardous classification. Contact licensed waste disposal companies specialized in handling pyrophoric and water-reactive materials. Never dispose of zirconium in regular waste streams or pour down drains. Ensure proper packaging in approved containers and provide complete hazard information to disposal contractors. Consider recycling options where available, as zirconium is a valuable metal.

Zirconium is classified under ADR as Class 4.2 (substances liable to spontaneous combustion), Packing Group III. Transportation requires specialized packaging that prevents contact with moisture and air, using UN-approved containers with appropriate hazard labels including GHS02 pictograms. Ensure proper documentation, emergency response information, and compliance with dangerous goods regulations. Only use carriers licensed for transporting hazardous materials and provide detailed safety data sheets.

Zirconium is subject to various regulatory frameworks including CLP regulation for classification and labeling, showing 'Danger' signal word and GHS02 pictogram. It falls under REACH regulation but is not listed as a Substance of Very High Concern (SVHC). Transportation is regulated under ADR/UN dangerous goods regulations. Additional nuclear industry regulations may apply for specific applications, and workplace safety regulations govern occupational exposure limits and handling procedures.

Zirconium is available through OYSI, a European distributor of technical chemicals specializing in hazardous materials. OYSI provides proper documentation, safety data sheets, and ensures compliance with European regulations for chemical distribution. As a professional supplier, they offer technical support and can advise on appropriate grades and specifications for specific applications while ensuring proper packaging and transportation according to ADR requirements.