Product Data Sheet

TMAl LO
Trimethylaluminum

TMAl LO is an unique grade to meet demanding
applications, with an oxygen specification below 1 ppm
oxygen.

CAS number
75-24-1

EINECS/ELINCS No.
200-853-0

TSCA statuslisted on inventory

Molecular weight
72.1

Characteristics
Appearance

Clear, colorless liquid

Boiling point, 760 torr

127 °C

Density, 30 °C

0.743 g/cm³

Melting point

15 °C

Solubility

Soluble in aromatic and saturated aliphatic andcycloaliphatic hydrocarbons

Stability to airIgnites upon exposure

Stability to water

Reacts violently, may ignite upon contact

Viscosity, 30 °C

0.9 mPa.s

Vapor Pressure
at 10 °C / 283.15 K

4.87 torr

at 15 °C / 288.15 K

6.57 torr

A2134

B

8.224

Gas constants

log P(torr) = B-A/T(K)

Thermochemical properties
Heat of vaporization ΔHv, 127 °C / 1 bar

247 J/g (59 cal/g)

Specific heat, 57 °C

2.213 J/g.°C (0.529 cal/g.°C)

Heat of formation ΔHf°, 25 °C / 1 bar-151 kJ/mole (-36 kcal/mole)Heat of combustion ΔHc°, 25 °C-3180 kJ/mole (-760 kcal/mole)Applications
For very oxygen sensitive applications, we have a unique grade to meet your demanding applications. Our special grade
TMAL LO has an oxygen specification below 1 ppm oxygen. TMAL LO is the preferred grade by many customers forapplications such as laser diodes, sensors (VCSEL), concentrated photovoltaic cells (CPV), power semiconductor devices(GaN on Si) and phosphide LED. Our trimethylaluminum is supplied in canisters (cylinders) made from stainless steel with
an electropolished internal finish. The cylinders are equipped with manual or pneumatic diaphragm valves. The valves areequipped with metal gasket VCR-connections.

Storage
TMAl LO is stable when stored under a dry, inert atmosphere and away from heat. CAUTION: TMAl LO may undergo
exothermic decomposition with gas evolution at elevated temperatures (see section on Safety and handling).

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
Swagelok VCR. For more information please refer to our Cylinder Offerings leaflet, available at hpmo.nouryon.com. Bothpackaging and transport meet the international regulations. TMAl LO is classified as Organometallic substance, liquid,pyrophoric, water-reactive; Class 4. 2; UN 3394; PG I.

Safety and handling
TMAl LO ignites upon exposure to air and reacts violently with water. Water must be scrupulously removed from processequipment prior to putting it into metal alkyls service. Failure to do so may result in an explosion. If heated above 120°C(248°F), TMAl LO will undergo exothermic decomposition with evolution of flammable gas. Products of complete
combustion of TMAL are aluminum oxide, carbon dioxide and water. TMAl LO causes severe burns to the skin and eyes. Itis imperative that proper personal protective equipment be worn when handling TMAl LO. Please refer to the Material
Safety Data Sheet (MSDS) for further information on the safe storage, use and handling of TMAl LO. This information
should be thoroughly reviewed prior to acceptance of this product. The MSDS is available at https://hpmo.nouryon.com.

Additional information
Nouryon uses leading edge processes, purification and transfilling techniques that ensure the repeatable and consistentdelivery of our TMAl LO in each cylinder that we supply. We apply state of the art techniques such as ICP-OES for trace
metal analysis to meet your demands. Please contact us for detailed sales specifications.

All information concerning this product and/or suggestions for handling and use contained herein are offered in good faith and are believed to be reliable.
Nouryon, however, makes no warranty as to accuracy and/or sufficiency of such information and/or suggestions, as to the product's merchantability orfitness for any particular purpose, or that any suggested use will not infringe any patent. Nouryon does not accept any liability whatsoever arising out of theuse of or reliance on this information, or out of the use or the performance of the product. Nothing contained herein shall be construed as granting orextending any license under any patent. Customer must determine for himself, by preliminary tests or otherwise, the suitability of this product for hispurposes. The information contained herein supersedes all previously issued information on the subject matter covered. The customer may forward,
distribute, and/or photocopy this document only if unaltered and complete, including all of its headers and footers, and should refrain from any
unauthorized use. Don’t copy this document to a website.

Swagelok and VCR are registered trademarks of Swagelok Company.

Contact Us
HPMO Americas
metalorganicsNA@nouryon.com
HPMO Europe, Middle East, India and Africa
metalorganicsEU@nouryon.com
HPMO Asia PacificmetalorganicsAP@nouryon.com

2021-9-20© 2021

TMAl LO

Electronics