Trihexylalumane

C18H39Al

trihexylalumane

CAS1116-73-0

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Identification

CAS Number
1116-73-0
EC Number
214-241-6
UN Number
3394
Index Number
013-004-00-2
PubChem CID
16682951

Physical-chemical properties

Molecular Formula
C18H39Al
Molar Mass
282.50 g/mol
IUPAC Name
trihexylalumane

Chemical Identifiers

InChI
InChI=1S/3C6H13.Al/c3*1-3-5-6-4-2;/h3*1,3-6H2,2H3;
InChI Key
ORYGRKHDLWYTKX-UHFFFAOYSA-N

Overview

Trihexylalumane (CAS 1116-73-0) is an organoaluminum compound characterized by three hexyl chains bonded to a central aluminum atom and pyrophoric properties. This specialized organoaluminum reagent belongs to the trialkylaluminum family, sharing structural similarities with related compounds such as tripropylalumane and trioctylalumane. With its molecular formula C18H39Al and molecular weight of 282.5 g/mol, trihexylalumane represents a mid-chain length member of this important chemical class. The compound features three linear hexyl groups attached to aluminum, providing a balance between reactivity and handling characteristics that makes it valuable for specific industrial applications. As an organoaluminum compound, trihexylalumane exhibits high reactivity toward moisture and oxygen, requiring careful handling under inert atmospheric conditions. The substance is classified under ADR Class 4.2 as a pyrophoric material, meaning it can spontaneously ignite upon contact with air at ambient temperatures. This reactivity profile necessitates specialized storage and transportation protocols, typically involving dry nitrogen or argon atmospheres and moisture-free environments. The compound's alkyl chains provide some steric hindrance compared to smaller analogs, potentially moderating its reactivity while maintaining its utility as a strong Lewis acid and alkylating agent. In industrial applications, trihexylalumane serves primarily as a catalyst component in polymerization processes, particularly in the production of polyolefins where precise control of polymer architecture is required. The compound also finds use as an alkylating agent in organic synthesis and as a cocatalyst in various metallocene-based catalytic systems. Additionally, its unique chain length makes it suitable for specialized applications in materials science where specific surface modifications or interfacial properties are desired. OYSI maintains reliable supply chains for trihexylalumane, ensuring consistent availability for European industrial customers requiring this specialized organoaluminum reagent.

Safety & Classification

No Hazard Classification

This substance is not classified as hazardous according to CLP Regulation (EC) No 1272/2008.

Transport (ADR)

UN Number3394
ADR Class4.2
Packing GroupI
Tunnel CodeB/E
Proper Shipping NameTrihexylaluminium, flüssig, pyrophor
Marine PollutantNo

Frequently Asked Questions

What is trihexylalumane?

Trihexylalumane is an organoaluminum compound with the molecular formula C18H39Al and CAS number 1116-73-0. This chemical consists of an aluminum atom bonded to three hexyl groups, making it a trialkylaluminum derivative. With a molecular weight of 282.5 g/mol, trihexylalumane belongs to the family of organometallic compounds that are widely used in industrial applications requiring aluminum-carbon bonds.

What are the physicochemical properties of trihexylalumane?

Trihexylalumane is typically a colorless to pale yellow liquid at room temperature with a characteristic organometallic odor. As an organoaluminum compound, it is highly reactive with moisture and oxygen, making it air and water sensitive. The compound is generally soluble in non-polar organic solvents such as hydrocarbons and ethers but reacts violently with protic solvents like water and alcohols.

What is trihexylalumane used for?

Trihexylalumane is primarily used as a catalyst component in polymerization reactions, particularly in the production of polyolefins and other synthetic polymers. It serves as a co-catalyst in Ziegler-Natta catalysis systems and is employed in various organometallic synthesis reactions. The compound is also used in specialized applications requiring aluminum-alkyl reagents for chemical modifications and as a precursor for other aluminum-containing compounds.

How to handle trihexylalumane safely?

Trihexylalumane must be handled under strict inert atmosphere conditions using nitrogen or argon gas to prevent contact with air and moisture. 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. Avoid any contact with water, alcohols, or other protic substances as violent reactions may occur, potentially generating flammable gases.

How to store trihexylalumane correctly?

Trihexylalumane must be stored under inert gas atmosphere in tightly sealed containers to prevent air and moisture exposure. Storage areas should be cool, dry, and well-ventilated, away from heat sources and incompatible materials. The compound is incompatible with water, alcohols, acids, and oxidizing agents. Containers should be made of suitable materials that resist corrosion and maintain the integrity of the inert atmosphere seal.

What to do in case of contact with trihexylalumane?

Immediate action is required if contact with trihexylalumane occurs. For skin contact, remove contaminated clothing and flush the affected area with large amounts of water while avoiding vigorous rubbing. In case of eye contact, rinse immediately with plenty of water for at least 15 minutes. If inhaled, move the person to fresh air immediately. Seek medical attention promptly in all cases and provide safety data sheet information to medical personnel.

How to dispose of trihexylalumane properly?

Trihexylalumane disposal must comply with local and national hazardous waste regulations due to its reactive nature. The compound should be carefully neutralized by qualified personnel using appropriate quenching agents under controlled conditions. Never dispose of trihexylalumane in regular waste streams or pour it down drains. Contact specialized hazardous waste disposal companies and follow all applicable environmental protection guidelines for organometallic waste disposal.

How to transport trihexylalumane?

Trihexylalumane is classified as ADR Class 4.2 (substances liable to spontaneous combustion), Packing Group I, indicating high danger level during transport. It requires specialized packaging that maintains inert atmosphere and prevents air exposure. Transport must comply with dangerous goods regulations, including proper labeling, documentation, and vehicle requirements. Only qualified carriers experienced in handling pyrophoric materials should transport this compound.

Is trihexylalumane subject to particular regulations?

Trihexylalumane is subject to REACH regulation in Europe and must be registered for commercial use above tonnage thresholds. It is not currently listed as a Substance of Very High Concern (SVHC). However, as an organoaluminum compound, it may be subject to specific handling and reporting requirements under national chemical safety regulations. Users must comply with workplace safety directives and environmental protection laws governing organometallic compounds.

Where to buy trihexylalumane in Europe?

Trihexylalumane is available through OYSI, a specialized European distributor of technical chemicals with expertise in organometallic compounds. OYSI provides reliable supply chains and technical support for customers requiring high-quality trihexylalumane for industrial applications. As a professional chemical distributor, OYSI ensures proper handling, documentation, and compliance with European regulations for this specialized organometallic compound.

Data Sources

Classification per CLP Regulation (EC) No 1272/2008. Data from ECHA and PubChem.