Zirconium

Zirconium is a metallic chemical element with the symbol Zr and atomic number 40, belonging to the transition metals group. It appears as a lustrous, greyish-white metal that is highly resistant to corrosion and has excellent heat resistance properties. With a molecular weight of 91.22 g/mol, zirconium is classified as a pyrophoric solid and water-reactive substance, making it potentially hazardous when not properly handled.

Zirconium is a solid metal at room temperature with a distinctive greyish-white, lustrous appearance and no characteristic odor. It has a molecular weight of 91.22 g/mol and exhibits excellent corrosion resistance, particularly in acidic environments. The metal is insoluble in water but can react with it under certain conditions, which contributes to its water-reactive classification. It has a high melting point and good thermal stability.

Zirconium is primarily used in nuclear reactor applications due to its excellent neutron transparency and corrosion resistance. It serves as cladding material for nuclear fuel rods and structural components in reactor cores. Additionally, zirconium finds applications in chemical processing equipment, aerospace components, and specialized alloys. Its corrosion resistance makes it valuable for chemical industry applications where harsh environments are encountered.

Zirconium must be handled with extreme caution due to its pyrophoric and water-reactive properties. Personal protective equipment including safety goggles, protective gloves, and flame-resistant clothing is essential. Work should be conducted in well-ventilated areas away from ignition sources and moisture. The GHS02 pictogram indicates fire hazard, requiring immediate attention to prevent spontaneous ignition. Emergency procedures and fire suppression equipment must be readily available.

Zirconium must be stored in dry, well-ventilated areas away from moisture, heat sources, and incompatible materials. As a pyrophoric solid (Pyr. Sol. 1) and water-reactive substance (Water-react. 1), it requires storage in airtight containers under inert atmosphere conditions. Storage areas should be equipped with appropriate fire detection and suppression systems. Temperature control and humidity monitoring are essential to prevent accidental ignition or dangerous reactions.

Immediate action is required in case of zirconium contact due to its hazardous nature. For skin contact, brush off any particles gently and flush with large amounts of water while removing contaminated clothing. In case of eye contact, rinse immediately with water for at least 15 minutes. If inhaled, move the person to fresh air immediately. Seek medical attention promptly for all exposure incidents and provide safety data sheet information to medical personnel.

Zirconium disposal must comply with local and national hazardous waste regulations due to its classification as Pyr. Sol. 1 and Water-react. 1. It cannot be disposed of through normal waste streams and requires specialized hazardous waste treatment facilities. Waste zirconium should be collected in appropriate containers, clearly labeled, and handled by licensed waste disposal companies. Consultation with environmental authorities is recommended for proper disposal procedures.

Zirconium is classified under ADR Class 4.2 (Substances liable to spontaneous combustion), Packing Group III, requiring specialized transport procedures. Packages must be properly labeled with appropriate hazard markings and GHS02 pictograms. Transport vehicles need proper documentation, emergency response information, and drivers must have appropriate hazardous materials training. Shipments must comply with international dangerous goods regulations and use approved packaging materials.

Zirconium is subject to various regulatory frameworks including REACH registration requirements in Europe and CLP classification regulations. It is not currently listed as a Substance of Very High Concern (SVHC), but its hazardous properties require compliance with occupational safety standards and environmental protection laws. Nuclear-grade zirconium may be subject to additional nuclear regulatory oversight and export control regulations depending on the intended application.

Zirconium is available through OYSI, a trusted European distributor of technical chemicals specializing in hazardous and specialized materials. OYSI provides proper documentation, safety data sheets, and regulatory compliance support for zirconium purchases. As an experienced chemical distributor, OYSI ensures appropriate packaging, labeling, and transport arrangements compliant with ADR Class 4.2 requirements, making them a reliable source for European customers requiring this specialized metal.