Dichloroethylaluminum

  • Dichloromonoethylaluminum
  • EADC
  • Ethylaluminum dichloride
  • Ethyldichloroaluminum
Formula
C2H5AlCl2
Structure
Description
Clear, yellow liquid.
Uses
Catalyst for olefin polymerization, aromatic hydrogenation, intermediate.

Registry Numbers and Inventories.
CAS
563-43-9
EC (EINECS/ELINCS)
209-248-6
RTECS
BD0705000
RTECS class
Other
UN (DOT)
3052
Beilstein/Gmelin
2228066
Swiss Giftliste 1
G-7329
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed
New Zealand
Listed
Japan ENCS (MITI)
Listed
Korea ECL
Listed

Properties.
Formula
C2H5AlCl2
Formula mass
126.95
Melting point, °C
32.2
Boiling point, °C
115
Density
1.232 g/cm3 (25 C)
Refractive index
1.5622 (20 C)

Hazards and Protection.
Storage
Aluminum alkyls. In undiluted condition. Must be kept under inert gas like nitrogen or argon, and all possibility of contact with water must be avoided. Solution containing not more than 20% of these compd in non-reactive solvents, however, can be handled without risk of spontaneous ignition. Aluminum alkyls in general, toxic materials or that can decompose into toxic components should be stored in cool ventilated place, out of sun, away from fire hazard. Substance must be periodically inspected and monitored. Incompatible materials should be isolated.
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
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
Neutralizing Agents for Acids and Caustics: Rinse with sodium bicarbonate or lime solution.
Stability
Less sensitive to oxidation in air than trialkylaluminums aluminum alkyls.
Incompatibilities
Incompatible with acids and bases Incompatible with oxidizing agents.

Fire.
Autoignition, °C
Ignites spontaneously in air.
Fire fighting
Fire Extinguishing Agents Not to Be Used: Water, foam, dry chemicals, halogenated agents, or carbon dioxideFire Extinguishing Agents: Inert dry powders such as dry graphite, soda ash, sand, limestone.
Fire potential
Fumes vigorously in air. May ignite spontaneously. Certain polymerization catalysts, such as aluminum alkyls, react and burn violently on contact with water. Aluminum alkyls aluminum alkyls are organic aluminum compounds that are highly reactive and dangerous because of spontaneous burning 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
 

Health.
Exposure limit(s)
OSHA: PEL (8 h TWA): 15 mg/m3.
Poison_Class
1
Exposure effects
Encephalopathy has been reported in patients with renal failure. This may range from mild personality changes and speech disorders to severe obtundation, seizures, coma and death. Fatal encephalopathy with status epilepticus has occurred after the use of aluminum-containing bone cement in vestibular neurectomies. Aluminum has also been linked to the histopathology of alzheimer disease. Occupational exposure to aluminum has been associated with cognitive deficits. 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
See Skin.

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
3052
Response guide
Hazard class
4.2
Packing Group
I
 
USCG CHRIS Code
EAD