Dichloro(ethyl)alumane

Dichloro(ethyl)alumane is an organoaluminum compound with the molecular formula C2H5AlCl2 and CAS number 563-43-9. This chemical features an aluminum center bonded to an ethyl group and two chlorine atoms, making it a member of the alkylaluminum halide family. With a molecular weight of 126.95 g/mol, it serves as an important intermediate in organometallic chemistry and various industrial applications requiring aluminum-carbon bonds.

Dichloro(ethyl)alumane is typically a colorless to pale yellow liquid at room temperature with high reactivity toward moisture and air. The compound exhibits strong Lewis acid properties due to the electron-deficient aluminum center and readily hydrolyzes in the presence of water, releasing hydrogen chloride. It demonstrates good solubility in non-polar organic solvents but must be handled under inert atmosphere conditions to prevent decomposition and maintain stability.

Dichloro(ethyl)alumane serves primarily as a catalyst and reagent in organic synthesis, particularly in polymerization reactions and Friedel-Crafts processes. It functions as an effective alkylating agent in pharmaceutical and fine chemical manufacturing, enabling the formation of carbon-carbon bonds. Additionally, this compound finds applications in the production of specialized organometallic compounds and as an intermediate in the synthesis of other aluminum-containing catalysts for industrial chemical processes.

Dichloro(ethyl)alumane requires handling under strict inert atmosphere conditions using nitrogen or argon gas to prevent contact with moisture and oxygen. Essential personal protective equipment includes chemical-resistant gloves, safety goggles, and protective clothing. Work should be conducted in well-ventilated areas or under fume hoods, as the compound can release corrosive vapors. All handling operations must be performed using dry, clean glassware and transfer techniques appropriate for air-sensitive materials.

Dichloro(ethyl)alumane must be stored in tightly sealed containers under inert atmosphere conditions, preferably nitrogen or argon, to prevent moisture contact and oxidation. Storage areas should be cool, dry, and well-ventilated, away from incompatible materials such as water, alcohols, and strong bases. The compound should be kept in appropriate chemical storage cabinets designed for reactive materials, with containers properly labeled and regularly inspected for integrity and proper sealing.

Immediate removal from exposure and fresh air access are essential first steps in case of dichloro(ethyl)alumane contact. For skin contact, affected areas should be washed thoroughly with plenty of water while removing contaminated clothing. Eye contact requires immediate irrigation with clean water for at least 15 minutes. In case of inhalation, move the person to fresh air immediately. Always seek medical attention promptly and provide safety data sheet information to healthcare professionals for proper treatment guidance.

Dichloro(ethyl)alumane disposal requires careful neutralization under controlled conditions by qualified personnel, typically involving slow addition to ice-cold water or alcohol to decompose the compound safely. The resulting waste must be treated according to local hazardous waste regulations and disposed of through licensed chemical waste management companies. Never dispose of this compound through regular waste streams or pour it down drains, as it can react violently with water and create hazardous conditions.

Dichloro(ethyl)alumane is classified under ADR Class 4.2 (substances liable to spontaneous combustion) with Packing Group I, indicating high danger level during transport. Shipments require specialized packaging designed for pyrophoric materials, proper hazard labeling, and documentation complying with dangerous goods regulations. Transportation must be handled by carriers certified for hazardous materials, with vehicles equipped for chemical transport and emergency response procedures in place throughout the shipping process.

Dichloro(ethyl)alumane falls under REACH regulation requiring registration for manufacture or import in quantities above one tonne per year in the European Union. The compound is not currently listed as a Substance of Very High Concern (SVHC), but users must comply with CLP regulation requirements for classification, labeling, and packaging. Industrial users should maintain safety data sheets, conduct risk assessments, and implement appropriate risk management measures according to applicable chemical safety legislation.

Dichloro(ethyl)alumane is available through OYSI, a specialized European distributor of technical chemicals serving industrial and research customers across the continent. OYSI provides this organoaluminum compound with appropriate documentation, safety data sheets, and technical support for proper handling and application. As a reactive specialty chemical, availability may require advance ordering and specific packaging arrangements to ensure safe delivery and compliance with transportation regulations for hazardous materials.