Methyl aluminum sesquichloride

  • Trichlorotrimethyldialuminium
Formula
(CH3)3Al . AlCl3
Structure
Description
Colorless pyrophoric liquid. Material is a 1 molar solution in toluene.

Registry Numbers and Inventories.
CAS
12542-85-7
EC (EINECS/ELINCS)
235-698-8
RTECS
BD1970000
RTECS class
Other
UN (DOT)
2845
Beilstein/Gmelin
363146 (G)
Swiss Giftliste 1
G-7370
Canada DSL/NDSL
DSL
US TSCA
Listed
Austrailia AICS
Listed

Properties.
Formula
C3H9Al2Cl3
Formula mass
205.43
Melting point, °C
23
Boiling point, °C
144
Vapor density (air=1)
>1
Density
0.90 g/cm3 (20 C)
Solubility in water
Decomposes

Hazards and Protection.
Storage
Keep away from heat, sparks, and flame. Keep away from sources of ignition. Store in a tightly closed container. Store in a cool, dry, well-ventilated area away from incompatible substances. Flammables-area. Water free area.
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 appropriate protective gloves, clothing and goggles.
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
Stable under normal temperatures and pressures.
Incompatibilities
Ntrogen tetroxide, nitric acid + sulfuric acid, silver perchlorate, strong oxidizers, sodium dilfuoride.
Decomposition
Carbon monoxide, irritating and toxic fumes and gases, carbon dioxide, aluminum oxide, chlorine, aluminum fumes, oxides of chlorine.

Fire.
Upper exp. limit, %
7.1
Lower exp. limit, %
1.1
Fire fighting
DO NOT USE WATER, carbon dioxide OR FOAM ON MATERIAL ITSELF. It may react violently with water. Smothering may not be effect.
Fire potential
Flammable/combustible material.
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
Fire will produce irritating, corrosive and/or toxic gases.
Health
-
 
Flammability
3
 
 
Reactivity
3
 

Health.
Exposure limit(s)
OEL-UNITED KINGDOM:TWA 2 mg(Al)/m3
Poison_Class
1
Exposure effects
Prolonged or repeated skin contact may cause dermatitis. May cause cardiac sensitization and severe heart abnormalities. May cause liver and kidney damage.
   Ingestion
Aspiration hazard. May cause gastrointestinal irritation with nausea, vomiting and diarrhea. May cause effects similar to those for inhalation exposure. Aspiration of material into the lungs may cause chemical pneumonitis, which may be fatal. Ingestion of large amounts may cause CNS depression.
   Inhalation
Inhalation of high concentrations may cause central nervous system effects characterized by headache, dizziness, unconsciousness and oma. Inhalation of vapor may cause respiratory tract irritation. May cause liver and kidney damage. Aspiration may lead to pulmonary edema. Vapors may cause dizziness or suffocation. Overexposure may cause dizziness, tremors, restlessness, rapid heart beat, increased blood pressure, hallucinations, acidosis, kidney failure. May cause burning sensation in the chest.
   Skin
Prolonged and/or repeated contact may cause irritation and/or dermatitis. May be absorbed through the skin. May cause irritation and dermatitis. May cause cyanosis of the extremities.
   Eyes
Causes eye irritation. May result in corneal injury. May cause chemical conjunctivitis and corneal damage.

First aid
 
   Ingestion
Get medical aid immediately. Remove from exposure to fresh air immediately. If not breathing, give artificial respiration. If breathing is difficult, give oxygen.
   Inhalation
Move victim to fresh air. Apply artificial respiration if victim is not breathing. Administer oxygen if breathing is difficult.
   Skin
Remove and isolate contaminated clothing and shoes. In case of contact with substance, immediately flush with running water for at least 20 minutes.
   Eyes
In case of contact with substance, immediately flush with running water for at least 20 minutes.

Transport.
UN number
2845
Response guide
Hazard class
4.2
Packing Group
I