195758

Tetramethylammonium bromide

98%

• 동의어(들): TMAB
• Linear Formula: (CH₃)₄N(Br)
• CAS Number: 64-20-0
• Molecular Weight: 154.05
• Beilstein: 3620955
• EC Number: 200-581-2
• MDL number: MFCD00011626
• UNSPSC 코드: 12352100
• PubChem Substance ID: 57647797
• NACRES: NA.21
• 분석: 98%
• 양식: solid

속성

• Quality Level: 100
• 분석: 98%
• 양식: solid
• mp: >300 °C (lit.)
• 작용기: 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

설명

일반 설명

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)

애플리케이션

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]

안전성 정보

• 픽토그램: GHS06
• 신호어: Danger
• 유해 및 위험 성명서: H300
• 예방조치 성명서: P264 - P270 - P301 + P310 - P405 - P501
• 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
• 개인 보호 장비: Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges