426296
Tetramethylammonium bromide
ACS reagent grade, ≥98.0%, powder
Synonym(s):
N,N,N-trimethyl-methanaminium bromide, TMAB
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About This Item
Linear Formula:
(CH3)4N(Br)
CAS Number:
Molecular Weight:
154.05
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352100
EC Number:
200-581-2
MDL number:
Beilstein/REAXYS Number:
3620955
Assay:
≥98.0%
Grade:
ACS reagent
Form:
powder
Product Name
Tetramethylammonium bromide, ACS reagent, ≥98.0%
grade
ACS reagent
Quality Segment
assay
≥98.0%
form
powder
reaction suitability
core: ammonium
impurities
≤0.5% trimethylamine hydrobromide, ≤0.5% trimethylamine
mp
>300 °C (lit.)
functional group
amine
SMILES string
[Br-].C[N+](C)(C)C
InChI
1S/C4H12N.BrH/c1-5(2,3)4;/h1-4H3;1H/q+1;/p-1
InChI key
DDFYFBUWEBINLX-UHFFFAOYSA-M
General description
Tetrabutylammonium bromide is a quaternary ammonium compound that is widely used as a phase transfer catalyst. Absolute viscosities of its aqueous solutions have been measured at various temperatures (20,25 and 30°C). Various physical properties (activity coefficient up to saturation, conductance, density and solubility in water) of TMABr have been evaluated.
Application
Tetrabutylammonium bromide (TBAB) may be used in the molten state in the following processes:
- Synthesis of (2S)-5-(3-phenyl-2-phthalimidylpropanoylamino)isophthalic acid.
- Synthesis of alkyl-substituted pyrroles in the absence of catalyst and organic solvent.
- Synthesis of dithioacetals from acetals by transthioacetalisation in a solvent free environment.
- Synthesis of polyamides (PAs) by the polymerization of terephthalic acid and diisocyanates.
- Catalyze the addition of thiols to conjugated alkenes.
- Dehydrochlorination of poly(vinyl chloride).
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Danger
hcodes
Hazard Classifications
Acute Tox. 2 Oral
Storage Class
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges
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