Molecule structure of Methyl aluminum sesquibromide (CAS NO.12263-85-3) :

IUPAC Name: bromo(dimethyl)alumane; dibromo(methyl)alumane 
Molecular Weight: 338.778636 g/mol
Molecular Formula: C₃H₉Al₂Br₃ 
Exact Mass: 337.786468
MonoIsotopic Mass: 335.788515
Heavy Atom Count: 8
Complexity: 27
Canonical SMILES: C[Al](C)Br.C[Al](Br)Br
InChI: InChI=1S/3CH3.2Al.3BrH/h3*1H3;;;3*1H/q;;;+1;+2;;;/p-3
InChIKey: NZIXICKPQWIFAU-UHFFFAOYSA-K
EINECS: 235-532-4

Reported in EPA TSCA Inventory.

A flammable solid. Danger from spontaneous combustion. When heated to decomposition it emits toxic fumes of Br⁻.

ACGIH TLV: TWA 2 mg(Al)/m³

 Methyl aluminum sesquibromide (CAS NO.12263-85-3) is also called Aluminum, tribromotrimethyldi- ; HSDB 2015 ; Methyl aluminum sesquibromide ; Methylaluminum sesquibromide ; Tribromotrimethyldialuminum . Methyl aluminum sesquibromide (CAS NO.12263-85-3) is spontaneous combustion in the air. It will decompose toxic and flammable hydrocarbon, bromide gas in contact with water, acids, oxidizers, alkalis and amines. So the storage environment should be ventilate, low-temperature and dry. Keep Methyl aluminum sesquibromide (CAS NO.12263-85-3) separate from acids and oxidizers.