Tetrabutylammonium bromide (TBAB) is a quaternary ammonium salt with the chemical formula (CH3)4NBr. It is a white, crystalline solid that is soluble in water, alcohol, and other organic solvents. TBAB is a versatile compound with a wide range of applications in chemistry, including as a phase-transfer catalyst, an emulsifier, and an ion-pairing agent.
TBAB is a versatile compound with a wide range of applications in chemistry. Some of its most common uses include:
Property | Value |
---|---|
Molecular weight | 322.4 g/mol |
Melting point | 162-164 °C |
Boiling point | 362 °C |
Density | 1.07 g/cm³ |
Solubility in water | 1.4 g/100 ml |
Solubility in ethanol | 10 g/100 ml |
TBAB can be synthesized by the reaction of tetrabutylammonium hydroxide with hydrobromic acid. The reaction is typically carried out in an aqueous solution.
(CH3)4NOH + HBr → (CH3)4NBr + H2O
Application | Description |
---|---|
Phase-transfer catalyst | Helps to transfer reactants and products between aqueous and organic phases |
Emulsifier | Stabilizes emulsions of immiscible liquids |
Ion-pairing agent | Reduces the polarity of ionic compounds |
TBAB is a toxic and corrosive compound. It should be handled with care and appropriate personal protective equipment should be worn.
Precaution | Description |
---|---|
Wear appropriate personal protective equipment | This includes gloves, a lab coat, and a respirator |
Handle in a well-ventilated area | This will help to prevent the buildup of toxic fumes |
Avoid contact with skin and eyes | If contact occurs, immediately flush the affected area with water |
Do not ingest | If ingestion occurs, seek medical attention immediately |
1. What is the molecular weight of TBAB?
The molecular weight of TBAB is 322.4 g/mol.
2. What is the melting point of TBAB?
The melting point of TBAB is 162-164 °C.
3. What is the boiling point of TBAB?
The boiling point of TBAB is 362 °C.
4. What is the density of TBAB?
The density of TBAB is 1.07 g/cm³.
5. What is the solubility of TBAB in water?
The solubility of TBAB in water is 1.4 g/100 ml.
6. What is the solubility of TBAB in ethanol?
The solubility of TBAB in ethanol is 10 g/100 ml.
7. What are the common applications of TBAB?
The common applications of TBAB include:
8. What are the safety precautions for handling TBAB?
The safety precautions for handling TBAB include:
Story 1:
A chemist was working with TBAB in a laboratory.
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