Environmentally friendly with non-volatile, non-flammable, and non-corrosive properties.
Cost-effective and commercially available with high thermal and chemical stability.
Soluble in both aqueous and organic solvents, enabling efficient phase transfer of reactants.
Can function as an effective ionic liquid for solvent-free organic transformations.
Tetrabutylammonium bromide is an eco-friendly, non-volatile, non-flammable, and non-corrosive ammonium salt that is low-cost, readily available, and exhibits excellent thermal and chemical stability. It is soluble in both aqueous and organic solvents, facilitating the transfer of water-soluble anionic reactants into the organic phase. Additionally, molten TBAB can serve as an efficient ionic liquid for performing organic transformations under solvent-free conditions.
| Melting point | 102-106 °C(lit.) |
| Boiling point | 102 °C |
| Density | 1.039 g/mL at 25 °C |
| Bulk density | 700kg/m3 |
| Vapor pressure | 0Pa at 25℃ |
| Refractive index | n20/D 1.422 |
| Fp | 100℃ |
| Storage temp | Store below +30°C. |
| Solubility | H2O: 0.1 g/mL, clear, colorless |
| Form | Crystalline Powder |
| Pka | 0[at 20 ℃] |
| Specific Gravity | 1.007 |
| Color | White to slightly cream |
| Odor | Amine like |
| PH | 3.5 to 7.0 (50 g/L, 25 ℃) |
| Water Solubility | 600 g/L (20 ºC) |
| Sensitive | Hygroscopic |
| λmax | λ: 240 nm Amax: 0.04 λ: 250 nm Amax: 0.03 λ: 260 nm Amax: 0.02 λ: 500 nm Amax: 0.02 |
| BRN | 3570983 |
| Stability | Stable. Incompatible with strong oxidizing agents. Protect from moisture. |
| InChIKey | JRMUNVKIHCOMHV-UHFFFAOYSA-M |
| LogP | 0.839 at 25℃ |
| CAS DataBase Reference | 1643-19-2(CAS DataBase Reference) |
| NIST Chemistry Reference | Tetra-N-butylammonium bromide(1643-19-2) |
| EPA Substance Registry System | Tetrabutylammonium bromide (1643-19-2) |
Tetrabutylammonium bromide (TBAB) is a quaternary ammonium compound and the most widely used phase transfer catalyst. Its interfacial properties have been examined in hydroxide-initiated reactions, providing insights into the mechanisms of phase transfer processes. TBAB has been shown to reduce retention time and eliminate peak tailing by functioning as an ion-pair reagent in the chromatographic analysis of quaternary ammonium compounds. In its molten state, TBAB acts as an ionic liquid, offering a green and sustainable alternative to organic solvents in organic synthesis. Its molar heat capacity, entropy, and free energy function have also been determined.
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