Skip to Content
Merck
All Photos(1)

Key Documents

View All Documentation

257222

Sigma-Aldrich

Trimethylaluminum

97%

Synonym(s):

Aluminum trimethanide, TMA

Sign Into View Organizational & Contract Pricing
All Photos(1)

About This Item

Linear Formula:
(CH3)3Al
CAS Number:
75-24-1
Molecular Weight:
72.09
Beilstein:
3587197
EC Number:
200-853-0
MDL number:
MFCD00008252
UNSPSC Code:
12352103
PubChem Substance ID:
24855575
NACRES:
NA.23

vapor pressure

69.3 mmHg ( 60 °C)

Quality Level

200

description

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

Assay

97%

form

liquid

reaction suitability

core: aluminum

bp

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

mp

15 °C (lit.)

density

0.752 g/mL at 25 °C (lit.)

SMILES string

C[Al](C)C

InChI

1S/3CH3.Al/h3*1H3;

InChI key

JLTRXTDYQLMHGR-UHFFFAOYSA-N

Looking for similar products? Visit Product Comparison Guide

General description

Trimethylaluminum (TMA) is a widely used precursor in the chemical vapor deposition (CVD) process to produce thin films in various applications. TMA is highly reactive and pyrophoric, which makes it an effective source of aluminum in thin film deposition processes to improve optoelectronic properties, such as enhanced light absorption and carrier transport characteristics.

Application

Trimethylaluminum can be used:
  • As a growth initiator to synthesize self-assembled aluminum nanoparticles via atomic layer deposition.
  • As a precursor to synthesize aluminum-doped ZnO thin films(AZO) for electron transport layer of perovskite solar cells. TMA enhances electrical conductivity and thermal stability of perovskite layers.
  • To fabricate Al2O3-coated Si-alloy anodes for Li-ion batteries. This coating helps to suppress the volume expansion of Si and improves cell stability.
  • To fabricate Al2O3-coated graphite electrode with superior anti-self-discharging behavior (260 h) with long stability (900 cycles), for Al-ion battery.

Packaging

Supplied in a Sure/Pac™ cylinder with a 1/4-turn bronze ball valve (Z122661) installed. This has a female 1/4"" NPT outlet thread and is closed with a male 1/4"" NPT carbon steel plug. The plug must be removed before use after ensuring the valve is in the closed position.

Compatible with the following:For instructions please refer to technical bulletin AL-136: The Aldrich Sure/Pac™ Cylinder System

Other Notes

Storage below 20°C may cause crystallization.

Legal Information

Aldrich is a registered trademark of Sigma-Aldrich Co. LLC
Sure/Pac is a trademark of Sigma-Aldrich Co. LLC

also commonly purchased with this product

Product No.
Description
Pricing

recommended

Product No.
Description
Pricing

septum inlet adapter

Product No.
Description
Pricing

Pictograms

FlameCorrosion
GHS02,GHS05

Signal Word

Danger

Hazard Statements

H250,H260,H314

Hazard Classifications

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

Supplementary Hazards

EUH014

Storage Class Code

4.2 - Pyrophoric and self-heating hazardous materials

WGK

nwg

Flash Point(F)

No data available

Flash Point(C)

No data available

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

Choose from one of the most recent versions:

Certificates of Analysis (COA)

Lot/Batch Number
SHBP2615
SHBP1162
SHBP0986
SHBL6474
SHBK6233

Don't see the Right Version?

If you require a particular version, you can look up a specific certificate by the Lot or Batch number.

Search for a COA

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

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
Emese Zsiros et al.
Clinical cancer research : an official journal of the American Association for Cancer Research, 21(12), 2840-2850 (2015-02-26)
Chemokines are implicated in T-cell trafficking. We mapped the chemokine landscape in advanced stage ovarian cancer and characterized the expression of cognate receptors in autologous dendritic cell (DC)-vaccine primed T cells in the context of cell-based immunotherapy. The expression of
View All Related Papers

Articles

Tutorial in Microelectronics and Nanoelectronics

As the electronic industry continues to move towards smaller and smaller devices, researchers must continually strive for technologies to deposit electronic materials with precision at ever-smaller scales. This trend has lead to a variety of techniques used in the microelectronics industry to layer materials with precision thicknesses, sometimes down to even the atomic level.

ALD — A Versatile Tool for Nanostructuring

In recent years considerable interest in ALD has emerged, mainly due to its ability to controllably coat even very small structures, e.g. nanoor microstructures.

Dye-Sensitized and Perovskite Solar Cells: Interface Engineering by Atomic Layer Deposition

Since the demonstration of the first practical solar cell 60 years ago, research on novel materials, improved solar cell design and structure, and innovative manufacturing processes have all contributed to a continuous increase in the efficiency of photovoltaic (PV) devices.

Atomic Layer Deposition of Nanomaterials for Li-Ion Batteries, Fuel Cells, and Solar Cells

Nanomaterials are considered a route to the innovations required for large-scale implementation of renewable energy technologies in society to make our life sustainable.

See All

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service