| Identification | Back Directory | [Name]
MASC | [CAS]
12542-85-7 | [Synonyms]
MASC
Trichlortrimethyldialuminium
trichlorotrimethyldialuminium
Trichlorotrimethyl dialuminum
METHYLALUMINUM SESQUICHLORIDE
Aluminum, trichlorotrimethyldi-
METHYLALUMINUMSESQUICHLORIDE(DOT)
Methylaluminium sesquichloride, 1M solution in toluene | [EINECS(EC#)]
235-698-8 | [Molecular Formula]
C3H9Al2Cl3 | [MDL Number]
MFCD00044876 | [MOL File]
12542-85-7.mol | [Molecular Weight]
205.43 |
| Chemical Properties | Back Directory | [Appearance]
The aluminum alkyl halides are flammable, reactive, and may be spontaneously combustible in air. They are colorless to yellow liquids. Ethylaluminum dichloride:(563-43-9): | [Melting point ]
23°C | [Boiling point ]
144°C | [density ]
1.151 | [form ]
liquid | [Uses]
Catalyst for polymerization of olefins, catalyst
for hydrogenation of aromatics. | [EPA Substance Registry System]
Aluminum, trichlorotrimethyldi- (12542-85-7) |
| Hazard Information | Back Directory | [Chemical Properties]
Colorless liquid at 25C. | [Hazard]
Ignites spontaneously in air, reacts violently
with water, keep out of contact with air and moisture. | [Potential Exposure]
These materials are used as components of olefin polymerization catalysts. The reader is referred to the entry on “Aluminum alkyls” for additional information on this entry. The aluminum alkyl halides parallel very closely the aluminum alkyls | [Shipping]
UN3052 Spontaneously combustible. Water reactive releasing large quantities of toxic and deadly hydrogen gas. (Note: this number does not appear in the 49/CFR HazMat tables) | [Incompatibilities]
The aluminum alkyl halides are strong reducing agents; they react—possibly violently—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. These chemicals react violently with nitromethaneEthylaluminum sesquichloride reacts explosively with carbon tetrachloride at room temperature. This chemical reacts violently with water, forming corrosive hydrogen chloride and flammable ethane gas. Diethylaluminum chloride may form an explosive product with chlorine azide. |
| Safety Data | Back Directory | [RIDADR ]
3052 | [HazardClass ]
4.2 | [PackingGroup ]
I | [Safety Profile]
A flammable liquid.
Danger from spontaneous combustion.
When heated to decomposition it emits
toxic fumes of Cl-. |
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