195758

Tetramethylammonium bromide

98%

• Synonim(y): TMAB
• Wzór liniowy: (CH₃)₄N(Br)
• Numer CAS: 64-20-0
• Masa cząsteczkowa: 154.05
• Beilstein: 3620955
• Numer WE: 200-581-2
• Numer MDL: MFCD00011626
• Kod UNSPSC: 12352100
• Identyfikator substancji w PubChem: 57647797
• NACRES: NA.21

Właściwości

• klasa czystości: for analytical purposes
• Poziom jakości: 100
• Próba: 98%
• Formularz: solid
• mp: >300 °C (lit.)
• grupa funkcyjna: amine
• ciąg SMILES: [Br-].C[N+](C)(C)C
• InChI: 1S/C4H12N.BrH/c1-5(2,3)4;/h1-4H3;1H/q+1;/p-1
• Klucz InChI: DDFYFBUWEBINLX-UHFFFAOYSA-M

Opis

Opis ogólny

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 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. Its impact on the first order rate constant values for the base hydrolysis of the following Fe(II) chelates has been investigated:

• bis(naphthylidene alanate) (nali)
• bis(naphthylidene phenylalanate) (nphali)
• bis(naphthylidene aspartate) (nasi)
• (naphthylidene histidinate) (nhi)
• bis(naphthylidenearginate) (nari)

Zastosowanie

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.

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Informacja o środkach bezpieczeństwa

• Piktogramy: GHS06
• Hasło ostrzegawcze: Danger
• Zwroty wskazujące rodzaj zagrożenia: H300
• Zwroty wskazujące środki ostrożności: P264 - P270 - P301 + P310 - P405 - P501
• Klasyfikacja zagrożeń: Acute Tox. 2 Oral
• Kod klasy składowania: 6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
• Klasa zagrożenia wodnego (WGK): WGK 3
• Temperatura zapłonu (°F): Not applicable
• Temperatura zapłonu (°C): Not applicable
• Środki ochrony indywidualnej: Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges