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Tetramethylammonium bromide

Name: Tetramethylammonium bromide
Brand: SIAL

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:

64-20-0

Molecular Weight:

154.05

NACRES:

NA.21

PubChem Substance ID:

24866694

UNSPSC Code:

12352100

EC Number:

200-581-2

MDL number:

MFCD00011626

Beilstein/REAXYS Number:

3620955

Assay:

≥98.0%

Grade:

ACS reagent

Form:

powder

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Properties

Product Name

Tetramethylammonium bromide, ACS reagent, ≥98.0%

grade

ACS reagent

Quality Segment

200

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

Description

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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1 of 1

This Item	140023	426288	53272
Sigma-Aldrich 426296 Tetramethylammonium bromide	Sigma-Aldrich 140023 Tetraethylammonium bromide	Sigma-Aldrich 426288 Tetrabutylammonium bromide	Sigma-Aldrich 53272 Hexyltrimethylammonium bromide
form powder	form crystalline	form solid	form solid
assay ≥98.0%	assay 98%	assay ≥98.0%	assay ≥98.0% (AT)
Quality Level 200	Quality Level 200	Quality Level 200	Quality Level 100
grade ACS reagent	grade reagent grade	grade ACS reagent	grade -
mp >300 °C (lit.)	mp 285 °C (dec.) (lit.)	mp 102-106 °C (lit.)	mp -
impurities ≤0.5% trimethylamine hydrobromide	impurities ≤2% triethylamine hydrobromide	impurities ≤0.5% tributylamine hydrobromide	impurities -

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pictograms

GHS06

signalword

Danger

hcodes

H300

pcodes

P301 + P330 + P331 + P310

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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