Tributylalumane

Tributylalumane is an organoaluminum compound with the molecular formula C12H27Al and CAS number 1116-70-7. This chemical consists of an aluminum atom bonded to three butyl groups, giving it a molecular weight of 198.32 g/mol. It belongs to the family of trialkylaluminum compounds, which are highly reactive organometallic substances used primarily as catalysts and reducing agents in organic synthesis and polymer chemistry.

Tributylalumane is typically a colorless to pale yellow liquid at room temperature with a characteristic organometallic odor. The compound is highly reactive and sensitive to air and moisture, readily hydrolyzing in the presence of water to form aluminum hydroxide and butane gas. It is soluble in non-polar organic solvents such as hydrocarbons and ethers but reacts violently with protic solvents and water.

Tributylalumane is primarily used as a catalyst and co-catalyst in polymerization reactions, particularly in the production of polyolefins and other synthetic polymers. It serves as a reducing agent in organic synthesis and as an alkylating agent for metal complexes. The compound is also employed in the preparation of other organoaluminum compounds and in specialized applications requiring strong Lewis acid catalysts in industrial chemical processes.

Tributylalumane requires handling under inert atmosphere conditions using appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work must be conducted in well-ventilated areas or under fume hoods due to its high reactivity with air and moisture. Personnel should be trained in handling pyrophoric materials and have immediate access to dry sand or specialized extinguishing agents, as water cannot be used for fire suppression.

Tributylalumane must be stored under inert gas atmosphere (nitrogen or argon) in tightly sealed containers to prevent contact with air and moisture. Storage areas should be cool, dry, and well-ventilated, away from heat sources and incompatible materials such as water, alcohols, acids, and oxidizing agents. Containers should be made of compatible materials and stored in secondary containment systems designed for pyrophoric substances.

Tributylalumane contact requires immediate action depending on the exposure route. For skin contact, remove contaminated clothing and flush with large amounts of water while seeking immediate medical attention. In case of eye contact, rinse immediately with water for at least 15 minutes. If inhaled, move to fresh air and seek medical help. Never use water on spills due to violent reaction; use dry sand or inert absorbent materials instead.

Tributylalumane disposal must be conducted according to local and national hazardous waste regulations as it is classified as pyrophoric waste. The compound should be carefully quenched with appropriate alcohols under controlled conditions by trained professionals, then disposed of through licensed hazardous waste contractors. Empty containers require special treatment as they may contain residues and should never be disposed of in regular waste streams.

Tributylalumane is classified under ADR Class 4.2 (substances liable to spontaneous combustion) with Packing Group I, indicating high danger. Transportation requires specialized packaging designed for pyrophoric materials, proper labeling with hazard identification numbers, and compliance with dangerous goods regulations. Vehicles must be equipped with appropriate emergency equipment, and drivers require dangerous goods transportation certification for this classification.

Tributylalumane is subject to various chemical regulations including REACH registration requirements in Europe, though it is not currently listed as a Substance of Very High Concern (SVHC). The compound falls under dangerous goods transportation regulations (ADR/RID) and workplace safety legislation due to its pyrophoric nature. Users must comply with industrial emissions directives and maintain appropriate safety data sheets and exposure assessments.

Tributylalumane is available through specialized chemical distributors in Europe, including OYSI, which supplies high-quality organometallic compounds to industrial customers. Due to its hazardous nature and specialized applications, purchase typically requires technical consultation to ensure proper handling capabilities and regulatory compliance. Buyers must demonstrate appropriate storage facilities and trained personnel for handling pyrophoric materials before procurement.