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Merck

195758

Sigma-Aldrich

Tetramethylammonium bromide

98%

Sinónimos:

TMAB

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MXP 1,487.00
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100 G
MXP 1,487.00
500 G
MXP 4,913.00

About This Item

Fórmula lineal:
(CH3)4N(Br)
Número de CAS:
Peso molecular:
154.05
Beilstein:
3620955
Número CE:
Número MDL:
Código UNSPSC:
12352100
ID de la sustancia en PubChem:
NACRES:
NA.21

MXP 1,487.00


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grado

for analytical purposes

Nivel de calidad

Ensayo

98%

Formulario

solid

mp

>300 °C (lit.)

grupo funcional

amine

cadena SMILES

[Br-].C[N+](C)(C)C

InChI

1S/C4H12N.BrH/c1-5(2,3)4;/h1-4H3;1H/q+1;/p-1

Clave InChI

DDFYFBUWEBINLX-UHFFFAOYSA-M

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Descripción general

Tetrabutylammonium bromide is a quaternary ammonium compound that is widely used as a phase transfer catalyst.[1] Absolute viscosities of its aqueous solutions have been measured at various temperatures (20,25 and 30°C).[2] Various physical properties (activity coefficient up to saturation, conductance, density and solubility in water) of TMABr have been evaluated.[3]
Tetramethylammonium bromide (TMABr) is a quaternary ammonium salt that is widely used as a phase transfer catalyst.[1] Absolute viscosities of its aqueous solutions have been measured at various temperatures (20,25 and 30°C).[2] Various physical properties (activity coefficient up to saturation, conductance, density and solubility in water) of TMABr have been evaluated.[3] 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)

Aplicación

Tetrabutylammonium bromide may be used in the molten state in the following processes:
  • Synthesis of (2S)-5-(3-phenyl-2-phthalimidylpropanoylamino)isophthalic acid.[5]
  • Synthesis of alkyl-substituted pyrroles in the absence of catalyst and organic solvent.[6]
  • Synthesis of dithioacetals from acetals by transthioacetalisation in a solvent free environment.[7]
  • Synthesis of polyamides (PAs) by the polymerization of terephthalic acid and diisocyanates.[8]
  • Catalyze the addition of thiols to conjugated alkenes.[9]
  • Dehydrochlorination of poly(vinyl chloride). [10]
Tetramethylammonium bromide may be used as a template in the synthesis of small colloidal zeolite Y nanocrystals.[11]

Pictogramas

Skull and crossbones

Palabra de señalización

Danger

Frases de peligro

Clasificaciones de peligro

Acute Tox. 2 Oral

Código de clase de almacenamiento

6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials

Clase de riesgo para el agua (WGK)

WGK 3

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

Equipo de protección personal

Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges


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Los clientes también vieron

Some physical properties of aqueous solutions of tetramethylammonium bromide and tetramethylammonium iodide
Levien BJ.
Australian Journal of Chemistry, 18(8), 1161-1170 (1965)
Dehydrochlorination of poly (vinyl chloride) by aqueous sodium hydroxide solution under two-phase conditions.
Kise H.
Journal of Polymer Science, 20(11), 3189-3197 (1982)
Kinetic study of the base-catalyzed hydrolysis of novel high-spin hydrophobic Fe(II)-azomethine amino acid chelates: Salt and structure effects on the reactivity
Russian Journal of General Chemistry, 85, 168-172 (2015)
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)
Controlling size and yield of zeolite Y nanocrystals using tetramethylammonium bromide.
Holmberg BA, et al.
Microporous and Mesoporous Materials : The Official Journal of the International Zeolite Association, 59(1), 13-28 (2003)

Questions

1–2 of 2 Questions  
  1. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer
    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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  2. How can I determine the shelf life / expiration / retest date of this product?

    1 answer
    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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