• USA Home
  • 195758 - Tetramethylammonium bromide

EMAIL THIS PAGE TO A FRIEND
195758 Sigma-Aldrich

Tetramethylammonium bromide

98%

Synonym: TBAB

  • CAS Number 64-20-0

  • Linear Formula (CH3)4N(Br)

  • Molecular Weight 154.05

  •  Beilstein/REAXYS Number 3620955

  •  EC Number 200-581-2

  •  MDL number MFCD00011626

  •  PubChem Substance ID 57647797

  •  NACRES NA.21

Purchase

Properties

Related Categories Ammonium Salts, Chemical Synthesis, Essential Chemicals, Phase Transfer Catalysts, Research Essentials,
Quality Level   100
assay   98%
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

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.

Tetramethylammonium bromide (TMABr) is a quaternary ammonium salt. 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. Its impact on the first order rate constant values for the base hydrolysis of the following Fe(II) chelates has been investigated:4
• bis(naphthylidene alanate) (nali)
• bis(naphthylidene phenylalanate) (nphali)
• bis(naphthylidene aspartate) (nasi)
• (naphthylidene histidinate) (nhi)
• bis(naphthylidenearginate) (nari)

Application

Tetrabutylammonium bromide 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).

Tetramethylammonium bromide may be used as a template in the synthesis of small colloidal zeolite Y nanocrystals.

Packaging

100, 500 g in poly bottle

Safety & Documentation

Safety Information

Symbol 
GHS06  GHS06
Signal word 
Danger
Hazard statements 
Precautionary statements 
RIDADR 
UN 2811 6.1 / PGII
WGK Germany 
WGK 3
RTECS 
BS7600000
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

Please Enter a Lot Number

Single- & multi-channel pipettes from BRAND
Protocols & Articles
Peer-Reviewed Papers
15

References

Related Products

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?