426296
四甲基溴化铵
ACS reagent grade, ≥98.0%, powder
别名:
N,N,N-trimethyl-methanaminium bromide, TMAB
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关于此项目
线性分子式:
(CH3)4N(Br)
化学文摘社编号:
分子量:
154.05
NACRES:
NA.21
PubChem Substance ID:
UNSPSC Code:
12352100
EC Number:
200-581-2
MDL number:
Beilstein/REAXYS Number:
3620955
Assay:
≥98.0%
Grade:
ACS reagent
Form:
powder
产品名称
四甲基溴化铵, ACS reagent, ≥98.0%
grade
ACS reagent
Quality Segment
assay
≥98.0%
form
powder
reaction suitability
core: ammonium, reaction type: phase-transfer, reagent type: organic catalyst
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
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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警示词
Danger
危险代码
Hazard Classifications
Acute Tox. 2 Oral
存储类别
6.1A - Combustible acute toxic Cat. 1 and 2 / very toxic hazardous materials
怎么回事？
WGK 3
闪点 (F)
Not applicable
闪点 (°C)
Not applicable
PPE（个人防护设备）
Eyeshields, Faceshields, Gloves, type P2 (EN 143) respirator cartridges