Description

Ethylaluminum Sesquibromide is an organoaluminum compound that serves as a highly reactive Lewis acid catalyst and alkylating agent. Its primary commercial value lies in its critical role as a co-catalyst in Ziegler-Natta type polymerizations, enabling the efficient production of polyolefins. This chemical is essential for manufacturers and R&D facilities in the polymer, specialty chemical, and advanced materials sectors, particularly for applications requiring precise control over molecular structure and polymerization kinetics. CAS No. 12327-99-0.

Application

• As a key co-catalyst in Ziegler-Natta catalyst systems for the production of polyethylene and polypropylene.
• In the synthesis of fine chemicals and pharmaceutical intermediates, acting as an alkylating or reducing agent.
• For the preparation of other organometallic compounds and specialty aluminum reagents.
• In olefin oligomerization and dimerization reactions to produce linear α-olefins (LAOs).
• As a Lewis acid catalyst in Friedel-Crafts and other organic synthesis reactions.
• In materials science research for the development of novel catalysts and metal-organic frameworks (MOFs).

Basic Information

Product Name	Ethylaluminum Sesquibromide
CAS No.	12327-99-0
Molecular Formula	C4H10Al2Br3
Molecular Weight	349.81 g/mol
Synonyms	Diethylaluminum Bromide-Ethylaluminum Dibromide (1:1); Ethylaluminum Bromide; EASB; Aluminium, bromodiethyl-; Bromodiethylaluminum; Sesquiethylaluminum Bromide; (Diethylaluminum Bromide)·(Ethylaluminum Dibromide)
EINECS	235-616-2

Quality Control

Our Ethylaluminum Sesquibromide is manufactured under stringent process controls to ensure batch-to-batch consistency and high reactivity. Quality is verified through analytical techniques including titration for active aluminum content, GC for hydrocarbon impurities, and moisture analysis by Karl Fischer. A Certificate of Analysis (COA) detailing purity, assay, and key physical properties is provided with each shipment to guarantee compliance with your technical requirements.

Storage

Preserve in a tightly closed container, protected from light. Store under a dry, inert atmosphere (argon or nitrogen) in a cool, dry, well-ventilated area, away from heat, ignition sources, and incompatible materials. Due to its pyrophoric nature and sensitivity to moisture and oxygen, it must be handled exclusively under an inert atmosphere using appropriate techniques.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (Al content by Titration)	≥ 95.0 %
Ethylaluminum Dibromide Content	30 - 40 %
Diethylaluminum Bromide Content	60 - 70 %
Free Alkyl Halides	≤ 2.0 %
Moisture (Karl Fischer)	≤ 100 ppm

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.