ChemicalBook >> CAS DataBase List >>Triethylaluminum


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Modify Date:2022-12-21 16:56:50

Triethylaluminum Properties

Melting point -50°C
Boiling point 128-130°C (50 mmHg)
Density 0.85 g/mL at 20 °C
vapor pressure 1 mmHg ( 62.2 °C)
Flash point −1 °F
storage temp. 0-6°C
form liquid
color colorless
Water Solubility reacts
Sensitive Air & Moisture Sensitive
BRN 3587229
Exposure limits ACGIH: TWA 50 ppm (Skin)
OSHA: TWA 500 ppm(1800 mg/m3)
NIOSH: IDLH 1100 ppm; TWA 50 ppm(180 mg/m3)
CAS DataBase Reference 97-93-8(CAS DataBase Reference)
NIST Chemistry Reference Triethylaluminum(97-93-8)
EPA Substance Registry System Triethylaluminum (97-93-8)


Risk and Safety Statements

Symbol(GHS)  GHS hazard pictogramsGHS hazard pictogramsGHS hazard pictogramsGHS hazard pictograms
Signal word  Danger
Hazard statements  H225-H250-H252-H260-H304-H314-H336-H361d-H373-H412
Precautionary statements  P210-P231+P232-P280-P301+P330+P331-P303+P361+P353-P304+P340+P310-P305+P351+P338-P370+P378
Hazard Codes  F,C,N
Risk Statements  14-17-20/21/22-34-67-65-51/53-11-63-48/20-62-14/15-23/24/25-50/53-10
Safety Statements  26-45-62-6A-43A-36/37/39-24/25-16-43-61-33-46
RIDADR  UN 3394 4.2/PG 1
WGK Germany  2
RTECS  BD2050000
HazardClass  4.3
PackingGroup  I
HS Code  29319090
Toxicity LC50 ihl-rat: 10 g/m3/15M 85JCAE -,1216,86
NFPA 704
3 3

Triethylaluminum price More Price(18)

Manufacturer Product number Product description CAS number Packaging Price Updated Buy
Sigma-Aldrich 192708 Triethylaluminum solution 25wt. % in toluene 97-93-8 100g $173 2023-01-07 Buy
Sigma-Aldrich 192708 Triethylaluminum solution 25wt. % in toluene 97-93-8 700g $656 2023-01-07 Buy
Alfa Aesar 043243 Triethylaluminum 94% 97-93-8 100g $360.15 2023-01-06 Buy
Strem Chemicals 13-1850 Triethylaluminum, min. 93% 97-93-8 25g $197 2023-01-06 Buy
Strem Chemicals 13-1850 Triethylaluminum, min. 93% 97-93-8 100g $592 2023-01-06 Buy
Product number Packaging Price Buy
192708 100g $173 Buy
192708 700g $656 Buy
043243 100g $360.15 Buy
13-1850 25g $197 Buy
13-1850 100g $592 Buy

Triethylaluminum Chemical Properties,Uses,Production

Chemical Properties

The aluminum alkyls are highly flammable and reactive, colorless to yellow liquids at room temperature. The lighter trialkylaluminums ignite spontaneously in air. They are normally supplied and used in a 20% solution with a hydrocarbon solvent, such as hexane, heptane, benzene, toluene. Properties may depend on solvent. Reacts violently with water.

Chemical Properties

Colorless liquid. Miscible with saturated hydrocarbons.


Triethylaluminum is used as a co-catalyst in the industrial production of polyethylene and for the production of medium chain alcohols. Used as a catalyst in Ziegler-Natta polymerization process for vinyl, olefin, diene polymerizations and linear oligomerization and cyclization of unsaturated hydrocarbons. It is also used as a catalyst to produce ethylene gas, chain growth of ethylene, longer chain aluminum alkyls, and in plating aluminum.


Triethylaluminum, in combination withmany transition metal complexes, is used as Ziegler-Natta polymerization and hydrogenationcatalyst. Also, it is used as intermediatein organic syntheses.


Catalyst intermediate for polymerization of olefins, especially ethylene; pyrophoric fuels; production of α-olefins and long-chain alcohols; gas plating of aluminum.

General Description

A colorless liquid. Flammable gas is produced on contact with water.

Air & Water Reactions

Pyrophoric, ignites in moist air [Merck 11th ed. 1989]. Reacts violently with water.

Reactivity Profile

Triethylaluminum reacts violently with water, alcohols, phenols, amines, carbon dioxide, sulfur oxides, nitrogen oxides, halogens, and halogenated hydrocarbons, causing fire and explosion hazards. [Handling Chemicals Safely 1980 p. 929]. A mixture of dimethylformamide and triethyl aluminum exploded when heated [Bretherick 1995].

Health Hazard

Exposure to smoke from fire causes metal-fume fever (flu-like symptoms). Since liquid ignites spontaneously, contact with eyes or skin causes severe burns.

Health Hazard

The health hazard from exposure to thiscompound is attributed to its violent reactionswith many substances, including airand water. Because of its violent reactionwith moisture, skin contact can cause a dangerousburn. Contact with eyes can damagevision.

Fire Hazard

Triethylaluminum is extremely pyrophoric, igniting spontaneously in air. It reacts violently with water, alcohol, halogenated hydrocarbons, and oxidizing substances. Among the alcohols, the lower alcohols, methanol, ethanol, n- propanol, and isopropyl alcohol, react explosively with triethylaluminum. Reactions with lower aldehydes, ketones and amides can be vigorous to violent. It may explode on contact with halocarbons in excess molar ratios or upon slight warming. When heated to 200°C (392°F), it decomposes, liberating ethylene and hydrogen.

Flammability and Explosibility


Safety Profile

Extremely destructive to living tissue. A very dangerous fire hazard when exposed to heat or flame. Ignites spontaneously in air. Explodes violently in water. To fight fire, use CO2, dry sand, dry chemical. Do not use water, foam, or halogenated fire-fighting agents. Explosive reaction with alcohols (e.g., methanol, ethanol, propanol), carbon tetrachloride, N,N-dmethylformamide + heat. Incompatible with halogenated hydrocarbons; triethyl borane. When heated to decomposition it emits acrid smoke and irritating fumes. See also ALUMINUM COMPOUNDS and ORGANOMETALS.

Potential Exposure

Alkyl aluminum compounds are used as components of olefin polymerization catalysts. They are also used in the synthesis of higher primary alcohols and in pyrophoric fuels, as a catalyst in making ethylene gas; and in plating aluminum.


ntial fire or explosion hazard. Shipping: UN3399 Organometallic substance, liquid, water-reactive, flammable, Hazard Class: 4.3; Labels: 4.3 Dangerous Dangerous when wet material, 3-Flammable liquid, technical name Required. UN3051-Spontaneously combustible. Also, this material is dangerous when wet. (Note: this number does not appear in the 49/CFR HazMat tables).

Purification Methods

Purify it by fractionation in an inert atmosphere under a vacuum in a 50cm column containing a heated nichrome spiral, taking the fraction b 112-114o/27mm. It is very sensitive to H2O and should be stored under N2. It should not contain chloride ions which can be shown by hydrolysis and testing with AgNO3. [Baker & Sisler J Am Chem Soc 75 4828 5193 1953, NMR: Brownstein et al. J Am Chem Soc 81 3826 1959, Beilstein 4 IV 4398.]


The lighter trialkylaluminums ignite spontaneously in air; can self-heat in the air at room temperature without any added energy and may ignite. These compounds are strong reducing agents. Incompatible with oxidizers (chlorates, nitrates, peroxides, permanganates, perchlorates, chlorine, bromine, fluorine, etc.); contact may cause fires or explosions. Keep away from alkaline materials, strong bases, strong acids, oxoacids, epoxides. Incompatible with water, oxygen (air), acids, alcohols, phenols, amines, carbon dioxide; sulfur oxides; halogenated compounds, and many other substances

Waste Disposal

Careful incineration

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View Lastest Price from Triethylaluminum manufacturers

Image Update time Product Price Min. Order Purity Supply Ability Manufacturer
Triethylaluminum(TEAL) pictures 2021-11-18 Triethylaluminum(TEAL)
US $0.00 / KG 1400KG 95%+ 500TONS Hunan russell chemicals technology co ltd
Triethylaluminum pictures 2019-07-06 Triethylaluminum
US $1.00 / KG 1KG 93+ 25kg Career Henan Chemical Co
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