Tetrabutylammonium bromide NEW

Tetrabutylammonium bromide Cas 1643-19-2

Product Description

Product Name: Tetrabutylammonium bromide

Synonyms: n,n,n-tributyl-1-butanaminiubromide

CAS No. 1643-19-2

M.F.: C16H36BrN

M.W.: 322.37

EINECS: 216-699-2

Specifications

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Tetrabutylammonium bromide (TBAB) is a quaternary ammonium salt with the chemical formula [(C₄H₉)₄N]⁺Br⁻. It is an ionic liquid and a phase-transfer catalyst (PTC), which is its most significant application. It appears as a white, hygroscopic (water-absorbing) crystalline solid that is highly soluble in water and various organic solvents.

Key Characteristics

• Chemical Name: Tetrabutylammonium bromide

  CAS Number: 1643-19-2

  Molecular Formula: C₁₆H₃₆BrN

  Molecular Weight: 322.37 g/mol

  Appearance: White to off-white crystals or powder

  Key Property: Acts as a Phase-Transfer Catalyst (PTC)

How It Works: The Phase-Transfer Catalyst (PTC) Mechanism

This is the most important function of TBAB. Many chemical reactions involve reagents that are dissolved in two immiscible (non-mixing) phases—typically an aqueous phase (water) and an organic phase (e.g., dichloromethane, toluene).

• The Problem: A reactant anion (e.g., CN⁻, MnO₄⁻, OH⁻) is soluble in the aqueous phase but insoluble in the organic phase. The other reactant is soluble only in the organic phase. The two reactants cannot meet to react.

  The TBAB Solution: The TBAB cation, [(C₄H₉)₄N]⁺, is hydrophobic (water-repelling) due to its four long butyl chains. It can travel into the organic phase.

1. At the interface of the two phases, the TBAB cation pairs with the reactant anion (e.g., CN⁻) from the water layer, forming a lipophilic (oil-soluble) ion pair like [(C₄H₉)₄N]⁺ CN⁻.

2. This ion pair is soluble in the organic phase, so it transports the anion into the organic phase.

3. In the organic phase, the anion is highly reactive and un-solvated, allowing it to react rapidly with the organic substrate.

4. After the reaction, the TBAB cation returns to the interface to shuttle another anion.

This process allows reactions to proceed at higher rates, with better yields, and under milder conditions (e.g., lower temperature) than without a catalyst.

Primary Applications

1. Phase-Transfer Catalysis: This is its dominant use. It is employed in a vast array of reactions, including:

• Nucleophilic Substitutions: e.g., conversion of alkyl halides to nitriles (using NaCN), azides, iodides, or fluorides.

  Oxidation Reactions: Using permanganate (MnO₄⁻) or hypochlorite (ClO⁻) ions in organic solvents.

  Etherifications and Esterifications.

  Preparation of Carbanions and their subsequent alkylation.

2. Ionic Liquid Precursor: TBAB is used to prepare other ionic liquids and salts with specific properties like low melting points.

3. Surfactant and Disinfectant: As a quaternary ammonium compound, it has surface-active and antimicrobial properties, though it's not typically the first choice for these applications.

4. Research Chemistry: A versatile reagent and catalyst in synthetic organic chemistry laboratories.

Safety and Handling

• Hazards: TBAB is classified as harmful if swallowed, causes skin and serious eye irritation, and may cause respiratory irritation.

  Hygroscopicity: It readily absorbs water from the atmosphere, which can affect its weight and reactivity in precise experiments. It should be stored in a sealed container in a dry environment.

  Disposal: Must be disposed of as hazardous chemical waste following appropriate regulations.

Summary

In essence, Tetrabutylammonium bromide is a workhorse phase-transfer catalyst in organic synthesis. Its unique ability to shuttle anions from an aqueous phase into an organic phase enables and accelerates countless reactions that would otherwise be slow, inefficient, or impossible, making it an indispensable tool in chemical research and industry.

Packing & Shipping

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2. Could you please provide some samples?

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4. Is there a discount?

Different quantity has different discount.

5.What's your MOQ?

Different products have different MOQ, such as:

1).Peptide products, the MOQ is 1 gram level

2).Liquid products, the MOQ is usually 50-100ML

3).API,  the MOQ is 1KG

4).Intermediate products and conventional product, the MOQ is 1KG; custom-tailored products, the MOQ depends on the production process.

5).Food additives and vitamin, the MOQ is usually one package: such as Vitamin C is 25KG / drum, Vitamin E oil or Vitamin A oil  is 5KG/bag;Vitamin E powder or Vitamin A powder is 20KG / cartons.

6).Agrochemical , the MOQ is 1KG, except preparations.

6.How do we take the quality complaint ?

First of all, our quality control will reduce the quality issue to near zero. If there is a quality problem caused by us, we will send you free goods for replacement or compensate your loss.

Company Information

Company profile

Wuhan Fortuna Chemical Co.,Ltd established in 2006, is a big integrative chemical enterprise being engaged in Pharmaceutical & its intermediates, Food/Feed additives, Fine chemicals in distributing the products of our own company and affiliated enterprises, are the members of Hubei E-commerce Chamber.

Our company has professional persons who major in chemical R&D and sicentific management, supply fine chemical products with high quality and close service, also supply custom-tailored products according to our clients’ requirement.

We have a positive and self-motivated management work team with a common philosophy, caring and commitment through teamwork, our team strive to achieve success in delighting our clients and ourselves. 

Since Wuhan Fortuna Chemical Co., Ltd founded, we continuously innovate our products and improve our service, sales network. Hence, we initiate the first sale mode on net in China, which is the retail trade of small package bring along wholesale of diversified management modes. Our products are exported widely to South Korea, Vietnam, Australia, Europe and South America, highly recommended by our clients.

We insist on the management creed “Market is our compass, Quality is our life, Credit is our soul”. Clients’ trust is our forward powder, their satisfaction is our struggling goal.

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