| Identification | More | [Name]
Triethylaluminum | [CAS]
97-93-8 | [Synonyms]
ALUMINUMTRIETHANIDE
ALUMINUM TRIETHYL
TEA
TRIETHYLALUMINIUM
TRIETHYLALUMINUM
aluminiumtriethyl
triethylalane
triethyl-alane
triethyl-aluminu
Triethylalumine
TRIETHYLALUMINUM, 1.0M SOLUTION IN HEXAN ES
TRIETHYLALUMINUM STEEL FLASK WITH 0.3 L (NET ~150 G)
TRIETHYLALUMINUM, 99.999%, ELECTRONIC GRADE
TRIETHYLALUMINUM SOLUTION, ~15% IN HEXAN E (~0.9 M)
TRIETHYLALUMINUM, 25 WT. % (1.9M) SOLUTI ON IN TOLUENE
Triethylaluminium Solution, ~25% in Toluene
TRIETHYLALUMINUM, 1.0M SOLUTION IN HEPTA NE
TRIETHYLALUMINUM STEEL FLASK 1.8 L (NET ~1 KG)
Triethylaluminum,95%,LIQUID
Triethylaluminum,93+% | [EINECS(EC#)]
202-619-3 | [Molecular Formula]
C6H15Al | [MDL Number]
MFCD00009015 | [Molecular Weight]
114.16 | [MOL File]
97-93-8.mol |
| Chemical Properties | Back Directory | [Appearance]
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. | [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) | [Fp ]
−1 °F
| [storage temp. ]
0-6°C
| [form ]
liquid | [color ]
colorless | [Water Solubility ]
reacts | [Sensitive ]
Air & Moisture Sensitive | [BRN ]
3587229 | [Dielectric constant]
6.4（20℃） | [Exposure limits]
ACGIH: TWA 50 ppm (Skin)
OSHA: TWA 500 ppm(1800 mg/m3)
NIOSH: IDLH 1100 ppm; TWA 50 ppm(180 mg/m3) | [InChIKey]
VOITXYVAKOUIBA-UHFFFAOYSA-N | [Uses]
Catalyst intermediate for polymerization of
olefins, especially ethylene; pyrophoric fuels; production
of α-olefins and long-chain alcohols; gas
plating of aluminum. | [CAS DataBase Reference]
97-93-8(CAS DataBase Reference) | [NIST Chemistry Reference]
Triethylaluminum(97-93-8) | [EPA Substance Registry System]
97-93-8(EPA Substance) |
| Safety Data | Back Directory | [Hazard Codes ]
F,C,N | [Risk Statements ]
R14:Reacts violently with water.
R17:Spontaneously flammable in air.
R20/21/22:Harmful by inhalation, in contact with skin and if swallowed .
R34:Causes burns.
R67:Vapors may cause drowsiness and dizziness.
R65:Harmful: May cause lung damage if swallowed.
R51/53:Toxic to aquatic organisms, may cause long-term adverse effects in the aquatic environment .
R11:Highly Flammable.
R63:Possible risk of harm to the unborn child.
R48/20:Harmful: danger of serious damage to health by prolonged exposure through inhalation .
R62:Possible risk of impaired fertility.
R14/15:Reacts violently with water, liberating extremely flammable gases .
R23/24/25:Toxic by inhalation, in contact with skin and if swallowed . | [Safety Statements ]
S26:In case of contact with eyes, rinse immediately with plenty of water and seek medical advice .
S45:In case of accident or if you feel unwell, seek medical advice immediately (show label where possible) .
S62:If swallowed, do not induce vomiting: seek medical advice immediately and show this container or label .
S36/37/39:Wear suitable protective clothing, gloves and eye/face protection .
S24/25:Avoid contact with skin and eyes .
S16:Keep away from sources of ignition-No smoking .
S43:In case of fire, use ... (indicate in the space the precise type of fire-fighting equipment. If water increases the risk add-Never use water) .
S61:Avoid release to the environment. Refer to special instructions safety data sheet .
S33:Take precautionary measures against static discharges .
S46:If swallowed, seek medical advice immediately and show this container or label . | [RIDADR ]
UN 3394 4.2/PG 1
| [WGK Germany ]
2
| [RTECS ]
BD2050000 | [F ]
10-21 | [TSCA ]
Yes | [HazardClass ]
4.3 | [PackingGroup ]
I | [HS Code ]
29319090 | [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. | [Hazardous Substances Data]
97-93-8(Hazardous Substances Data) | [Toxicity]
LC50 ihl-rat: 10 g/m3/15M 85JCAE -,1216,86 |
| Hazard Information | Back Directory | [General Description]
A colorless liquid. Flammable gas is produced on contact with water. | [Reactivity Profile]
ALUMINUM TRIETHYL(97-93-8) 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]. | [Air & Water Reactions]
Pyrophoric, ignites in moist air [Merck 11th ed. 1989]. Reacts violently with water. | [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. | [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. | [First aid]
I If this chemical gets into the eyes, remove any contact lenses at once and irrigate immediately for at least 15 minutes, occasionally lifting upper and lower lids. Seek medical attention immediately. If this chemical contacts the skin, remove contaminated clothing and wash immediately with soap and water. Seek medical attention immediately. If this chemical has been inhaled, remove from exposure, begin rescue breathing (using universal precautions, including resuscitation mask) if breathing has stopped and CPR if heart action has stopped. Transfer promptly to a medical facility. When this chemical has been swallowed, get medical attention. Give large quantities of water and induce vomiting. Do not make an unconscious person vomit. | [Shipping]
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). | [Incompatibilities]
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 | [Chemical Properties]
Colorless liquid. Miscible with saturated hydrocarbons. | [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. | [Waste Disposal]
Careful incineration | [Production Methods]
In a typical example, a slurry is prepared containing 7 wt % aluminum powder (0.1 wt% zirconium catalyst content) and 45 wt% recycled triethylaluminum in a paraffin hydrocarbon fraction, boiling range 177 – 260 ℃. The slurry is pumped into the reactor at a rate of 1.5 m3/h, at a reactor temperature of 132 ℃, while hydrogen is introduced at the bottom to maintain a partial pressure of 10 MPa. Excess hydrogen is removed in flash drum, wherein pressure is decreased to 3 MPa and temperature is lowered to prevent thermal reversal of the reaction. In the ethylation reactor sufficient ethylene is added to react completely with the Al – H bonds. Temperature is held at around 85 ℃ or somewhat higher. The addition rate increases with temperature, but carboalumination of ethylene also can occur to formn-butyl groups, especially at higher temperatures. Hydrogen and ethylene partial pressure is kept low in ethylation reactor to minimize hydrogenation of ethylene to ethane and to reduce excess carboalumination products. Excess ethylene and hydrogen are removed in flash drum. A portion of the triethylaluminum product solution is recycled to reactor.
| [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]
Highlyflammable | [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.] |
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