Chloro(dimethyl)alumane;dichloro(methyl)alumane

C3H9Al2Cl3

chloro(dimethyl)alumane;dichloro(methyl)alumane

CAS12542-85-7

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Identification

CAS Number
12542-85-7
EC Number
235-698-8
UN Number
3394
PubChem CID
61568

Physical-chemical properties

Molecular Formula
C3H9Al2Cl3
Molar Mass
205.42 g/mol
IUPAC Name
chloro(dimethyl)alumane;dichloro(methyl)alumane

Chemical Identifiers

InChI
InChI=1S/3CH3.2Al.3ClH/h3*1H3;;;3*1H/q;;;+1;+2;;;/p-3
InChI Key
HYZXMVILOKSUKA-UHFFFAOYSA-K

Overview

Chloro(dimethyl)alumane;dichloro(methyl)alumane (CAS 12542-85-7) is an organoaluminum compound mixture featuring reactive aluminum-carbon bonds and moderate chlorine substitution. This organoaluminum compound represents a specific mixture of two distinct aluminum species: chloro(dimethyl)alumane and dichloro(methyl)alumane, with the molecular formula C3H9Al2Cl3 and a molecular weight of 205.42 g/mol. The compound belongs to the broader family of organoaluminum reagents, which are essential building blocks in organometallic chemistry and industrial catalysis. Unlike fully alkylated aluminum compounds such as tripropylalumane or trioctylalumane, this mixed chloroalkyl system offers unique reactivity profiles due to the presence of both aluminum-carbon and aluminum-chlorine bonds. The dual nature of this compound provides versatility in chemical transformations, as the chlorine atoms serve as leaving groups while the methyl groups contribute to the electron-donating properties characteristic of organoaluminum species. This structural arrangement makes it particularly valuable in applications requiring controlled reactivity and selectivity. The compound is classified under ADR Class 4.2, indicating its pyrophoric nature and tendency to ignite spontaneously upon contact with air, requiring specialized handling protocols and inert atmosphere storage conditions. Industrial applications typically include use as a catalyst component in polymerization reactions, particularly in the production of polyolefins where precise control of molecular weight and polymer architecture is required. The compound also serves as an intermediate in the synthesis of more complex organoaluminum derivatives and finds application in specialized organic synthesis procedures requiring aluminum-mediated transformations. OYSI maintains availability of chloro(dimethyl)alumane;dichloro(methyl)alumane for European customers requiring high-purity organoaluminum compounds for research and industrial applications.

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 NameMethylaluminiumsesquichlorid, flüssig, pyrophor
Marine PollutantNo

Frequently Asked Questions

What is chloro(dimethyl)alumane;dichloro(methyl)alumane?

Chloro(dimethyl)alumane;dichloro(methyl)alumane is an organoaluminum compound with the molecular formula C3H9Al2Cl3 and CAS number 12542-85-7. This chemical consists of a mixture of two aluminum-containing species: chloro(dimethyl)alumane and dichloro(methyl)alumane. With a molecular weight of 205.42 g/mol, it belongs to the class of organometallic compounds that contain aluminum-carbon bonds combined with aluminum-chlorine bonds, making it a versatile intermediate in various chemical processes.

What are the physicochemical properties of chloro(dimethyl)alumane;dichloro(methyl)alumane?

Chloro(dimethyl)alumane;dichloro(methyl)alumane is an organoaluminum compound that typically exists as a colorless to pale yellow liquid at room temperature. Like most organoaluminum compounds, it is highly reactive with moisture and air, and is generally insoluble in water but soluble in non-polar organic solvents such as hydrocarbons and ethers. The compound has a molecular weight of 205.42 g/mol and exhibits typical organoaluminum reactivity patterns, including sensitivity to hydrolysis and oxidation.

What is chloro(dimethyl)alumane;dichloro(methyl)alumane used for?

Chloro(dimethyl)alumane;dichloro(methyl)alumane is primarily used as a catalyst and co-catalyst in polymerization reactions, particularly in the production of polyolefins such as polyethylene and polypropylene. It serves as an alkylating agent in organic synthesis and as a precursor for other organoaluminum compounds. The compound is also utilized in Ziegler-Natta catalysis systems and various organometallic reactions where controlled aluminum-carbon bond formation is required in industrial chemical processes.

How to handle chloro(dimethyl)alumane;dichloro(methyl)alumane safely?

Chloro(dimethyl)alumane;dichloro(methyl)alumane must be handled under strictly inert atmosphere conditions using nitrogen or argon gas to prevent contact with moisture and oxygen. Personnel should wear appropriate personal protective equipment including chemical-resistant gloves, safety goggles, and protective clothing. Work should be conducted in well-ventilated areas or under fume hoods. All handling equipment must be thoroughly dried, and the compound should be transferred using dry, inert gas techniques to prevent dangerous reactions with atmospheric moisture.

How to store chloro(dimethyl)alumane;dichloro(methyl)alumane correctly?

Chloro(dimethyl)alumane;dichloro(methyl)alumane must be stored under strictly anhydrous conditions in sealed containers under inert gas atmosphere, typically nitrogen or argon. Storage areas should be cool, dry, and well-ventilated, away from sources of moisture, heat, and ignition. The compound should be kept in compatible containers, avoiding contact with water, alcohols, and oxidizing agents. Storage facilities must comply with regulations for pyrophoric substances, as this compound is classified under ADR Class 4.2 (substances liable to spontaneous combustion).

What to do in case of contact with chloro(dimethyl)alumane;dichloro(methyl)alumane?

In case of skin contact with chloro(dimethyl)alumane;dichloro(methyl)alumane, immediately remove contaminated clothing and flush the affected area with large amounts of water for at least 15 minutes. For eye contact, rinse immediately with water for at least 15 minutes while holding eyelids open. If inhaled, move the person to fresh air immediately. Do not induce vomiting if ingested. Seek immediate medical attention in all cases of exposure, informing medical personnel of the specific chemical involved and its organoaluminum nature.

How to dispose of chloro(dimethyl)alumane;dichloro(methyl)alumane appropriately?

Chloro(dimethyl)alumane;dichloro(methyl)alumane must be disposed of according to local and national hazardous waste regulations as it contains organoaluminum compounds. The material should be carefully hydrolyzed under controlled conditions by trained professionals using appropriate safety measures, as this reaction can be vigorous and generate flammable gases. Disposal must be carried out by licensed hazardous waste contractors who specialize in organometallic compounds. Never dispose of this material in regular waste streams or pour it down drains.

How to transport chloro(dimethyl)alumane;dichloro(methyl)alumane?

Chloro(dimethyl)alumane;dichloro(methyl)alumane is classified under ADR Class 4.2, Packing Group I, indicating it is a substance liable to spontaneous combustion with high danger level. Transportation requires specialized packaging that prevents contact with moisture and air, typically using UN specification packages under inert atmosphere. Shipments must be accompanied by proper dangerous goods documentation, emergency response information, and handled by trained personnel. The transport vehicle must comply with ADR requirements for Class 4.2 substances, including appropriate placarding and routing restrictions.

Is chloro(dimethyl)alumane;dichloro(methyl)alumane subject to specific regulations?

Chloro(dimethyl)alumane;dichloro(methyl)alumane is subject to various chemical regulations including REACH registration requirements in Europe for commercial use. As an organoaluminum compound, it falls under specific handling and storage regulations due to its pyrophoric nature. The substance is not currently listed as a Substance of Very High Concern (SVHC) under REACH. However, its classification under ADR Class 4.2 means it must comply with dangerous goods regulations for storage, handling, and transport throughout the European Union.

Where to buy chloro(dimethyl)alumane;dichloro(methyl)alumane in Europe?

Chloro(dimethyl)alumane;dichloro(methyl)alumane is available through OYSI, a specialized European distributor of technical chemicals and organometallic compounds. OYSI provides this compound to industrial customers across Europe with proper documentation and safety data sheets. As a specialized organoaluminum compound requiring expert handling, it is typically supplied to qualified industrial users with appropriate facilities for handling pyrophoric materials. Contact OYSI directly for availability, technical specifications, and compliance documentation required for your specific application and location.

Data Sources

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