Cerium

Cerium is a rare earth metal belonging to the lanthanide series of the periodic table. With the chemical symbol Ce and atomic number 58, it is the most abundant rare earth element in the Earth's crust. Cerium appears as a silvery-white, soft metal that tarnishes readily in air and develops a yellowish or reddish oxide coating. It has a molecular weight of 140.116 g/mol and exhibits unique properties that make it valuable in various industrial applications.

Cerium is a soft, silvery-white metal that oxidizes rapidly when exposed to air, forming a characteristic yellowish or reddish surface coating. It has a melting point of 798°C and a boiling point of 3,443°C. The metal is relatively soft and can be cut with a knife. Cerium is reactive with water, slowly decomposing cold water and rapidly reacting with hot water. It is soluble in dilute acids and exhibits both +3 and +4 oxidation states.

Cerium is used extensively in catalytic applications, particularly in automotive catalytic converters for reducing emissions. It serves as a polishing agent for glass and optical lenses due to its abrasive properties. The metal is essential in the production of flints for lighters, arc lighting applications, and as an alloying agent in steel production. Cerium compounds are also used in self-cleaning ovens, diesel fuel additives, and in the glass industry for UV absorption and coloring.

Cerium requires careful handling due to its pyrophoric nature and potential for spontaneous ignition. Personal protective equipment including safety goggles, gloves, and protective clothing should be worn when handling. Work should be conducted in well-ventilated areas or under inert atmosphere to prevent oxidation and potential fire hazards. Avoid contact with water, acids, and oxidizing agents. Keep away from heat sources, sparks, and open flames. Use appropriate tools to prevent mechanical friction that could cause ignition.

Cerium must be stored in a cool, dry, well-ventilated area away from incompatible materials such as water, acids, and oxidizing agents. The metal should be kept in airtight containers under inert gas atmosphere to prevent oxidation and potential spontaneous combustion. Storage areas should be equipped with appropriate fire suppression systems and kept away from heat sources, sparks, and flames. Regular inspection of storage containers is essential to detect any signs of deterioration or oxidation.

Cerium contact requires immediate medical attention and specific first aid measures. For skin contact, immediately remove contaminated clothing and flush the affected area with plenty of water for at least 15 minutes. In case of eye contact, rinse thoroughly with water and seek immediate medical attention. If inhaled, move the person to fresh air and provide artificial respiration if breathing has stopped. For ingestion, do not induce vomiting and seek immediate medical care. Always consult a physician regardless of the exposure route.

Cerium disposal must comply with local, national, and international environmental regulations as it is classified as hazardous waste. The material should never be disposed of in regular waste streams or sewerage systems. Contact specialized hazardous waste disposal companies for proper treatment and disposal. Small quantities may require neutralization under controlled conditions before disposal. Always consult with local environmental authorities and waste management specialists to ensure compliance with applicable regulations and prevent environmental contamination.

Cerium is classified under ADR Class 4.2 (substances liable to spontaneous combustion) with Packing Group I, indicating high danger level. Transport requires specialized packaging designed for pyrophoric materials, including hermetically sealed containers with inert gas atmosphere. Vehicles must display appropriate hazard placards and carry emergency response information. Drivers require ADR training certification for dangerous goods transport. Shipments must include proper documentation and emergency contact information for incident response.

Cerium is regulated under various European and international frameworks including REACH registration requirements and CLP classification for hazard communication. While not currently listed as a SVHC (Substance of Very High Concern), it is subject to standard chemical safety assessments. Transport regulations under ADR apply due to its pyrophoric nature. Users must comply with workplace safety directives and environmental protection laws. Import/export may require permits depending on purity levels and intended use, particularly for nuclear applications.

Cerium is available through OYSI, a specialized European distributor of technical chemicals serving industrial customers across Europe. As an experienced supplier of rare earth metals and specialty chemicals, OYSI provides high-quality cerium with appropriate documentation including safety data sheets and certificates of analysis. Our technical support team can assist with product selection, safety requirements, and regulatory compliance. Contact OYSI directly for current availability, specifications, and delivery options to your location within Europe.