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Quaternary Ammonium Salts
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Product Description
Tetrabutylammonium Bromide CAS#1643-19-2
Tetrabutylammonium bromide is an environmentally benign, non-volatile, non-flammable, non-corrosive, low-cost, commercially available ammonium salt with high thermal and chemical stability. In TBAB, tetrabutylammonium salt can dissolve in both aqueous as well as in organic solvents, which helps to transport the water-soluble anionic reactants into the organic phase. Moreover, molten TBAB was also employed as an efficient ionic liquid to carry out organic transformations under solvent-free conditions[1].
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: 0.04λ: 250 nm Amax: 0.03λ: 260 nm Amax: 0.02λ: 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) |
Product Usage
Tetrabutylammonium bromide (TBAB) is a quaternary ammonium compound. It is the most widely used phase transfer catalyst. Its interfacial properties have been studied in case of hydroxide initiated reactions. This may be applied in understanding the mechanism of phase transfer reactions. TBAB is reported to decrease retention time and remove peak tailing by acting as an ion pair reagent during the chromatographic analysis of quaternary ammonium compounds. In the molten state TBAB behaves like an ionic liquid which is a promising green alternative to organic solvents in organic synthesis. Its molar heat capacity, entropy and free energy function have been determined.
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