Triethyl aluminum

  • Triethylaluminum
  • Aluminum, triethyl
Formula
C6H15Al
Structure
Description
A colorless liquid.
Uses
Catalyst intermediate for polymerization of olefins, expecially ethylene, pyrophoric fuels, production of alpha-olefins and long chain alcohols, gas plating of aluminum.

Registry Numbers and Inventories.
CAS
97-93-8
EC (EINECS/ELINCS)
202-619-3
RTECS
BD2050000
RTECS class
Other
UN (DOT)
3051
Beilstein/Gmelin
3587229
Beilstein Reference
4-04-00-04398
Swiss Giftliste 1
G-7402
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C6H15Al
Formula mass
114.19
Melting point, °C
-46.1
Boiling point, °C
128
Vapor pressure, mmHg
1 (25 C)
Critical temperature
405
Critical pressure
134
Density
0.836 g/cm3 (20 C)
Solubility in water
Decomposes
Viscosity
9.56 cp (20 C)
Refractive index
1.48 (6.5 C)
Heat of vaporization
57.3 kJ/mol
Heat of combustion
-4872 kJ/mol

Hazards and Protection.
Storage
Must be completely sealed off from atmosphere.
Handling
All chemicals should be considered hazardous. Avoid direct physical contact. Use appropriate, approved safety equipment. Untrained individuals should not handle this chemical or its container. Handling should occur in a chemical fume hood.
Protection
Wear safety goggles, face shield, gas mask and protective rubber clothing. Protective clothing and high standard of training in necessary precautionary measures are essential for handling of materials.
Respirators
Wear positive pressure self-contained breathing apparatus (SCBA).
Small spills/leaks
Use a fully encapsulating, vapor protective clothing should be worn for spills and leaks with no fire. ELIMINATE all ignition sources and prevent all contact with spilled material. Stop leak if you can do it without risk. Cover with DRY earth, DRY sand, or other non-combustible material followed with plastic sheet to minimize spreading or contact with rain. Use clean non-sparking tools to collect material and place it into loosley covered plastic containers for later disposal. This is a generic DOT guideline. EXCEPTION: For Dithionite (Hydrosulfite/Hydrosulphite) spills, UN1384, UN1923 and UN1929, dissolve with 5 parts water and collect for proper disposal.
Stability
Explodes violently in water. Violent reactions can occur if exposed to halogenated hydrocarbons. Highly reactive.
Incompatibilities
Reacts violently with water, alcohols, phenols, amines, carbon dioxide, sulfur oxides, nitrogen oxides, halogens, and halogenated hydrocarbons, causing fire and explosion hazards.
Decomposition
Decomposition to Al(OH)3 + C2H6 when heated to decomposition, it emits acrid smoke and irritating fumes.

Fire.
Fire fighting
Fire Extinguishing Agents Not to Be Used: Water, foam, halogenated extinguishing agents.Fire Extinguishing Agents: Inert powders (sand, limestone), dry chemical
Fire potential
Extreme. Very flammable. Ignites spontaneously in air.
Hazards
May ignite on contact with moist air or moisture. May burn rapidly with flare-burning effect. May react vigorously or explosively on contact with water. May decompose explosively when heated or involved in a fire. May re-ignite after fire is extinguished.
Combustion products
Intense smoke may cause metal-fume fever.
Health
3
 
Flammability
4
 
 
Reactivity
3
 
 
Special
W

Health.
Poison_Class
1
Exposure effects
Headache, myalgias, weakness, and paresthesias in both feet have been reported. Aluminum in drinking water has been linked to central nervous system birth defects. Some aluminum compounds have proven teratogenic in laboratory animals; however, overall, aluminum is not considered teratogenic.
   Ingestion
Burns of the esophagus and less commonly the stomach may occur after caustic ingestion; the absence of oral mucosal injury does not reliably exclude esophageal burns. Patients with stridor, drooling or vomiting are more likely to have esophageal burns.
   Inhalation
Stridor, dyspnea, upper airway injury, and pulmonary edema, especially following inhalation of vaporized caustics, may occur.
   Skin
Severe skin irritation and/or burns may occur.
   Eyes
Alkaline eye exposures produce distortion of cellular membranes, loss of corneal, the mucous membrane that lines the inner surface of the eyelid and the exposed surface of the eyeballl and lens epithelium and loss of endothelium of the cornea and blood vessels.

First aid
 
   Ingestion
Mucosal if no respiratory compromise is present, dilute immediately with milk or water; no more than 8 ounces in adults and 4 ounces in children. Gastric ipecac contraindicated. Consider insertion of a small, flexible nasogastric or orogastric tube to suction gastric contents after recent large ingestions; the risk of further mucosal injury must be weighed against potential benefits.
   Inhalation
Move patient to fresh air. Monitor for respiratory distress. If cough or difficulty breathing develops, evaluate for respiratory tract irritation, bronchitis, or pneumonitis. Administer oxygen and assist ventilation as required. Treat bronchospasm with beta2 agonist and corticosteroid aerosols.
   Skin
Remove contaminated clothes. Irrigate exposed skin with copious amounts of water for at least 15 minutes or longer, depending on concentration, amount and duration of exposure to the chemical. A physician may need to examine the area if irritation or pain persist.
   Eyes
Home irrigation - exposed eyes should be irrigated with copious amounts of water for at least 30 minutes. An examination should always be performed. Ophthalmologic consultation should be obtained. Medical facility: irrigate with sterile 0.9% Saline for at least an hour or until the cul-de-sacs are free of particulate matter and returned to neutrality (confirm with pH paper).

Transport.
UN number
3051
Response guide
Hazard class
4.2
Packing Group
I
 
USCG CHRIS Code
TAL