This website uses cookies. They allow us to optimize your browsing experience and also help us to understand how you use our site. By continuing to use this website, you accept our use of cookies. Privacy Statement

Trimethyl aluminum - TMAl

Trimethyl aluminum Solar

AkzoNobel offers the highest purity trimethylaluminum under the product name of TMAl SSG (Select Semiconductor Grade). TMAl SSG is a high quality aluminum precursor for the deposition of compound semiconductors which are used in applications such as light emitting diodes, laser diodes, high performance transistors and high efficiency solar cells.

TMAl LO is especially synthesized to meet ultra low oxygen requirements.

TMAl SOLAR for solar cells

Under the name of TMAL SOLAR we offer a product grade specifically aimed to serve the needs of the solar cell industry. TMAl SOLAR is used by solar cell manufacturers to create an aluminum oxide passivation layer to increase efficiency of solar cells. TMAl SOLAR has proven performance in ALD and PECVD processes used in the solar industry. It offers a cost-effective alternative to the ultra-pure trimethylaluminum used in the semiconductor industry. Not to forget its superior performance over industrial grade TMAl used in the plastics industry. The extra purification step of our trimethylaluminum guarantees consistent, high quality solar material.


CAS Number: 75-24-1
Appearance: clear, colorless liquid
Density, 30°C: 0.743 g/ml
Melting point: 15°C
Boiling point, 760 torr: 127°C 
Viscosity, 30°C: 0.9 mPa.s
Stability to air: ignites upon exposure
Stability to water: reacts violently, may ignite upon contact
Solubility: soluble in aromatic, saturated aliphatic and cycloaliphatic hydrocarbons

Please refer to the Product Data Sheets for TMAl SSG and TMAl LO or download the TMAl SOLAR brochure.

Dimethylaluminum is stable when stored under a dry, inert atmosphere and away from heat. The product may undergo violent exothermic decomposition with gas evolution at elevated temperatures.  

Packaging and transport
Containers are fabricated from stainless steel with an electropolished internal finish and are equipped with dip tube for top discharge and diaphragm valves. The diaphragm valves are equipped with metal gasket face seal connections such as Swagelock® VCR®.

Safety and handling 
Trimethylaluminum ignites upon exposure to air and reacts violently with water. 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. If heated above 120°C (248°F), trimethylaluminum will undergo exothermic decomposition with evolution of flammable gas. Products of complete combustion of trimethylaluminum are aluminum oxide, carbon dioxide and water. Trimethylaluminumc causes severe burns to the skin and eyes. It is imperative that proper personal protective equipment be worn when handling trimethylaluminum. 

Please refer to the Material Safety Data Sheets (MSDS) for TMAl SSG, TMAL LO and TMAl SOLAR further information on the safe storage, use and handling of diethylzinc. This information should be thoroughly reviewed prior to acceptance of the product.

Contact us for detailed specifications.


  • Trimethyl aluminum for solar cells

    TMAl Solar

    Trimethyl aluminum for solar cells

    Read more