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12542-85-7

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Basic Information
CAS No.: 12542-85-7
Name: MASC
Molecular Structure:
Molecular Structure of 12542-85-7 (MASC)
Formula: C3H9 Al2 Cl3
Molecular Weight: 205.43
Synonyms: Methylaluminumsesquichloride;Trichlorotrimethyldialuminum;
EINECS: 235-698-8
Density: g/cm3
Melting Point: 23°C
Boiling Point: °Cat760mmHg
Flash Point: °C
Hazard Symbols: 3
Safety: A flammable liquid. Danger from spontaneous combustion. When heated to decomposition it emits toxic fumes of Cl−.
PSA: 0.00000
LogP: 3.81990
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Chemistry

Molecule structure of Methyl aluminum sesquichloride (CAS NO.12542-85-7) :

IUPAC Name: chloro(dimethyl)alumane; dichloro(methyl)alumane 
Molecular Weight: 205.425636 g/mol
Molecular Formula: C3H9Al2Cl3 
Exact Mass: 203.94006
MonoIsotopic Mass: 203.94006 
Heavy Atom Count: 8
Complexity: 27
Canonical SMILES: C[Al](C)Cl.C[Al](Cl)Cl
InChI: InChI=1S/3CH3.2Al.3ClH/h3*1H3;;;3*1H/q;;;+1;+2;;;/p-3
InChIKey: HYZXMVILOKSUKA-UHFFFAOYSA-K
EINECS: 235-698-8
Product Categories: Organometallics

Consensus Reports

Reported in EPA TSCA Inventory.

Safety Profile

A flammable liquid. Danger from spontaneous combustion. When heated to decomposition it emits toxic fumes of Cl−.
RIDADR: 3052
HazardClass: 4.2
PackingGroup: I

Standards and Recommendations

ACGIH TLV: TWA 2 mg(Al)/m3

Specification

 Methyl aluminum sesquichloride (CAS NO.12542-85-7) is also called Trichlorotrimethyldialuminum ; Aluminum, trichlorotrimethyldi- . Methyl aluminum sesquichloride (CAS NO.12542-85-7) is spontaneous combustion in the air. It will  decompose toxic and flammable hydrocarbon, chloride gas in contact with water, acids, oxidizers, alkalis and amines. So the storage environment should be ventilate, low-temperature and dry. Keep Methyl aluminum sesquichloride (CAS NO.12542-85-7) separate from acids and oxidizers.