METHYLALUMINOXANE
- CAS NO.:120144-90-3
- Empirical Formula: C3H9Al3O3X2
- Molecular Weight: 174.05
- MDL number: MFCD00192274
- SAFETY DATA SHEET (SDS)
- Update Date: 2023-10-21 16:16:55
What is METHYLALUMINOXANE?
Description
Methylaluminoxane (MAO) is by far the industrially most significant aluminoxane. The direct hydrolysis of trimethylaluminum (TMA) with water, however, is extremely exothermic and difficult to control. Thus, small scale, continuous processes, rather than large scale batch processes, are used for the direct hydrolysis of TMA to MAO. MAO can also be produced by reaction of TMA with organic acids, ketones, or carbon dioxide. The synthesis of MAO from TMA and CO2 actually has substantial literature precedent. Carbonation of an organoaluminum compound with carbon dioxide forms an aluminum carboxylate.
Chemical properties
Clear colorless solution
Mechanism of action
The role of Methylaluminoxane in metallocene catalyst polymerization is fourfold. First, it alkylates the transition metal. Second, it extracts an alkyl group from the transition metal to generate an active cationic polymerization catalyst. Third, it acts as a bulky, inert anion to the highly reactive transition metal cation. Fourth, it scavenges impurities from the polymerization reactor.
Properties of METHYLALUMINOXANE
Boiling point: | 111 °C |
Density | 0.875 g/mL at 25 °C |
vapor pressure | 0.76 mm Hg ( 60 °C) |
storage temp. | 2-8°C |
Safety information for METHYLALUMINOXANE
Computed Descriptors for METHYLALUMINOXANE
New Products
ALUMINIUM IODIDE 100 GM BUFFER CAPSULE PH 7.0 - 10 CAP BUFFER SOLUTION PH 9.5 (BORATE) EZEE BLUE GEL STAINER BORAX CARMINE (GRENACHERS ALCOHOLIC) POTASSIUM IODATE - IODIDE SOLN 0.1 N Dabigatran Acyl-O3-D-Glucuronide Trifluoroacetic Acid Salt Isofolic Acid Dabigatran 2-O-acylglucuronide metabolite Dabigatran Acyl-?-D- glucuronide Trifluroacetic Acid Erythromycin EP Impurity A Desloratidine Related Compound ARelated products of tetrahydrofuran
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