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TMA, Aluminum trimethanide
Linear Formula:
CAS Number:
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EC Number:
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PubChem Substance ID:

Quality Level

vapor pressure

69.3 mmHg ( 60 °C)


heat of vaporization: ~41.9 kJ/mol (dimer)





reaction suitability

core: aluminum


125-126 °C (lit.)
127 °C/760 mmHg
20 °C/8 mmHg
56 °C/50 mmHg


15 °C (lit.)


0.752 g/mL at 25 °C (lit.)

SMILES string




InChI key


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General description

Trimethylaluminum (TMA) is the most reactive and volatile among all organoaluminium compounds. It is extremely pyrophoric. It acts as a highly reactive reducing and alkylating agent.


TMA is used in a Ziegler Natta catalyst for polymerization and hydrogenation. TMA is mainly used for the production of methylaluminoxane, such as metalorganic chemical vapor deposition (MOCVD) of:
  • Al2O3 using TMA and O2 precursors.
  • Al4C3 layers have been grown on Al2O3 (0001) using TMA and methane as source materials for aluminum and carbon.


100 g in Sure-Pac™

Other Notes

Storage below 20°C may cause crystallization.

Recommended products

Angled septum-inlet adapter Z118206 or straight septum-inlet adapter, 6mm I.D. inlet, Z118141 or straight septum-inlet adapter, 13mm I.D. inlet, Z118192 is recommended.



Signal Word


Hazard Statements

Hazard Classifications

Pyr. Liq. 1 - Skin Corr. 1B - Water-react. 1

Supplementary Hazards

Storage Class Code

4.2 - Pyrophoric and self-heating hazardous materials



Flash Point(F)

No data available

Flash Point(C)

No data available

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Certificate of Analysis

Enter Lot Number to search for Certificate of Analysis (COA).

Certificate of Origin

Enter Lot Number to search for Certificate of Origin (COO).

Photo-induced current and its degradation in Al4C3/Al2O3 (0001) grown by metalorganic chemical vapor deposition
Kim D, et al.
Thin Solid Films, 557, 216-221 (2014)
Metalorganic chemical vapor deposition of Al2O3 using trimethylaluminum and O2 precursors: Growth mechanism and crystallinity
Liu X, et al.
Journal of Crystal Growth, 408, 78-84 (2014)
Aluminum oxide from trimethylaluminum and water by atomic layer deposition: The temperature dependence of residual stress, elastic modulus, hardness and adhesion
Oili ME, et al.
Thin Solid Films, 552, 124-135 (2014)
G R V de Sousa et al.
Hormone and metabolic research = Hormon- und Stoffwechselforschung = Hormones et metabolisme, 47(9), 656-661 (2015-05-20)
DAX1 transcription factor is a key determinant of adrenogonadal development, acting as a repressor of SF1 targets in steroidogenesis. It was recently demonstrated that DAX1 regulates pluripotency and differentiation in murine embryonic stem cells. In this study, we investigated DAX1
Patricia A Mote et al.
Breast cancer research and treatment, 151(2), 309-318 (2015-04-29)
Progesterone receptor (PR) function, while essential in normal human breast, is also implicated in breast cancer risk. The two progesterone receptors, PRA and PRB, are co-expressed at equivalent levels in normal breast, but early in carcinogenesis normal levels of PRA:PRB


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