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Tetramethylammonium bromide

ACS reagent, ≥98.0%

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Synonym(s):
N,N,N-trimethyl-methanaminium bromide, TMAB
Linear Formula:
(CH3)4N(Br)
CAS Number:
Molecular Weight:
154.05
Beilstein:
3620955
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

Assay

≥98.0%

form

powder

impurities

≤0.5% trimethylamine hydrobromide
≤0.5% trimethylamine

mp

>300 °C (lit.)

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

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This Item
140023426288245070
assay

≥98.0%

assay

98%

assay

≥98.0%

assay

≥97%

form

powder

form

crystalline

form

solid

form

solid

impurities

≤0.5% trimethylamine hydrobromide

impurities

≤2% triethylamine hydrobromide

impurities

≤0.5% tributylamine hydrobromide

impurities

-

mp

>300 °C (lit.)

mp

285 °C (dec.) (lit.)

mp

102-106 °C (lit.)

mp

184 °C (dec.) (lit.)

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

200

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).

Pictograms

Skull and crossbones

Signal Word

Danger

Hazard Statements

Precautionary Statements

Hazard Classifications

Acute Tox. 2 Oral

Storage Class Code

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

Personal Protective Equipment

dust mask type N95 (US), Eyeshields, Gloves

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Customers Also Viewed

Some physical properties of aqueous solutions of tetramethylammonium bromide and tetramethylammonium iodide
Levien BJ.
Australian Journal of Chemistry, 18(8), 1161-1170 (1965)
Heat capacities and thermodynamic properties of two tetramethylammonium halides.
Chang SS and Westrum Jr EF.
J. Chem. Phys. , 36(9), 2420-2423 (1962)
Viscosity of aqueous solutions. III. Tetramethylammonium bromide and the role of the tetraalkylammonium ions.
Nightingale Jr ER.
The Journal of Physical Chemistry, 66(5), 894-897 (1962)
Novel biobased polyurethanes synthesized from nontoxic phenolic diol containing l-tyrosine moiety under green media.
Mallakpour S, et al.
Journal of Polymers and the Environment, 18(4), 685-695 (2010)
Catalysis by ionic liquids: solvent-free efficient transthioacetalisation of acetals by molten tetrabutylammonium bromide.
Ranu BC, et al.
Journal of the Chemical Society. Perkin Transactions 1, 13, 1520-1522 (2002)

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