Methylaluminoxane

Methylaluminoxane
Identifiers
CAS Number	120144-90-3 ;
3D model (JSmol)	Interactive image;
ChemSpider	10687336;
EC Number	485-360-0;
PubChem CID	16685262;
	InChI InChI=1S/CH3.Al.O/h1H3;; Key: CPOFMOWDMVWCLF-UHFFFAOYSA-N;
	SMILES C[Al]=O;
Properties
Chemical formula	(Al(CH3)xOy)n
Appearance	White solid
Hazards
	Occupational safety and health (OHS/OSH):
Main hazards	Pyrophoric
	GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H228, H250, H252
Precautionary statements	P210, P222, P235+P410, P240, P241, P280, P302+P334, P370+P378, P407, P413, P420, P422
	Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). verify (what is ?) Infobox references

Methylaluminoxane, commonly called MAO, is a mixture of organoaluminium compounds with the approximate formula (Al(CH₃)O)_n. It is usually encountered as a solution in (aromatic) solvents, commonly toluene but also xylene, cumene, or mesitylene, Used in large excess, it activates precatalysts for alkene polymerization.

Identifiers
CAS Number	120144-90-3^N
3D model (JSmol)	Interactive image
ChemSpider	10687336
EC Number	485-360-0
PubChem CID	16685262
InChI InChI=1S/CH3.Al.O/h1H3;; Key: CPOFMOWDMVWCLF-UHFFFAOYSA-N
SMILES C[Al]=O
Properties
Chemical formula	(Al(CH₃)_xO_y)_n
Appearance	White solid
Hazards
Occupational safety and health (OHS/OSH):
Main hazards	Pyrophoric
GHS labelling:
Pictograms
Signal word	Warning
Hazard statements	H228, H250, H252
Precautionary statements	P210, P222, P235+P410, P240, P241, P280, P302+P334, P370+P378, P407, P413, P420, P422
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa). Y verify (what is ^YN ?) Infobox references