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Nouryon MMAO-7 7 wt% AL in Isopar E

Nouryon MMAO-7 7 wt% AL in Isopar E

Producer:  Nouryon
MMAO-7 7 wt% AL in Isopar E is an aluminoxane used as a co-catalyst in the polymerization of olefins.
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Identification & Functionality


Features & Benefits

Additional Information
  • Availability: MMAO-7 in Isopar E is a commercial product (typically containing ~7% aluminum). The product is not available neat.

Applications & Uses



Physical Form
Clear to slightly hazy, colorless liquid
Soluble in
Aromatic and saturated aliphatic hydrocarbons
ValueUnitsTest Method / Conditions
Active Al Content (ᵇ ᵉ )10-20wt%-
Aluminum Content (ᵇ ᵈ)6.0-8.0wt%-
Methane Content (molar)min. 98.0 (ᵇ ᶜ)%-
ValueUnitsTest Method / Conditions
Density (at 30°C)0.766g/cm³-
Stability to AirMay ignite upon exposure--
Stability to WaterReacts violently--
Viscosity (at 30°C)1.9mPa.s-
ᵃ MMAO-7 composition is covered under US Patent 5,777,143. For more information on aluminoxanes, see the Mouryon technical bulletin entitledProperties of Aluminoxanes from Nouryon . Isopar E is a mixture of mainly C8 aliphatic hydrocarbons from ExxonMobil Corporation. ᵇ Data forIsopar E solution containing ~7% aluminum; this corresponds to an MMAO-7 concentration of about 18% ᶜ Calculated from gaschromatographic analysis of C1-C4 hydrocarbons and hydrogen obtained by hydrolysis. ᵈ Determined by titration of aqueous hydrolyzate. ᵉDetermined by 31P NMR Spectroscopy method.

Regulatory & Compliance

Chemical Inventories

Packaging & Availability

Packaging and Transport
  • Isopar E solutions of MMAO-7 are available worldwide in cylinders and portable tanks. In North America only, MMAO-7 in Isopar E is also available in tank trailers and rail cars. Containers are fabricated from carbon steel and are equipped with dip tubes for top discharge and all connections are located in the vapor space. Both packaging and transport meet the international regulations.

Storage & Handling

  • MMAO-7 in Isopar E is stable when stored under a dry, inert atmosphere and away from heat. MMAO-7 in Isopar E is significantly more stable to long-term storage than solutions of conventional polymethylaluminoxane, but prolonged storage at 25°C or higher may cause solutions to become viscous.
Safety & Handling
  • Isopar E solutions of MMAO-7 may ignite upon exposure to air and react violently with water. Isopar E solutions of MMAO- 7 must be handled under a dry, inert atmosphere, e.g. nitrogen or argon. Water must be scrupulously removed from process equipment prior to putting it into metal alkyls service. Failure to do so may result in an explosion. Products of complete combustion of Isopar E solutions of MMAO-7 are aluminum oxide, carbon dioxide and water. Isopar E solutions of MMAO-7 cause severe burns to the skin and eyes. It is imperative that proper personal protective equipment be worn when handling Isopar E solutions of MMAO-7. This information should be thoroughly reviewed prior to acceptance of this product.
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