| Customization: | Available |
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| CAS No.: | 1941-30-6 |
| Formula: | C12h28brn |
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Tetrapropylammonium bromide (TPAB) consists of a central nitrogen atom bonded to four propyl groups, and a bromide anion is associated with the positively charged nitrogen. This structure gives it unique chemical properties.
It is widely used as a phase-transfer catalyst in organic synthesis, helping to transfer charged species between different phases and facilitating chemical reactions. It is also used as an ion-pair reagent in chromatography. In addition, it has applications in various industries such as in the synthesis of zeolites and as a preservative or antibacterial agent in certain products.
Overview
Product name : Tetrapropylammonium bromide
CAS No. : 1941-30-6
Molecular Formula : C12H28BrN
EINECS NO. : 217-727-6
| Item | Specification |
| Appearance | Crystals or Crystalline Powder |
| Assay | ≥99.00% |
| Melting point | 266-272 °C |
| density | 1.1949 (rough estimate) |
| refractive index | 1.5260 (estimate) |
| solubility | H2O: 0.1 g/mL, clear |
| form | Crystals or Crystalline Powder |
| color | White |
| Odor | Odorless |
| PH | 5-7 (100g/l, H2O) |
| Water Solubility | 100 g/L |
25kg/fiber drum
Phase - transfer catalysis in organic synthesis
1)Alkylation reactions:
Tetrapropylammonium bromide (TPAB) is widely used as a phase - transfer catalyst in alkylation reactions. For example, in the alkylation of active methylene compounds such as malonic esters or acetoacetic esters. It helps to transfer the alkylating agent (usually an alkyl halide) from the organic phase to the aqueous phase where the active methylene compound is present. This transfer promotes the reaction between the two components, increasing the reaction rate and yield.
2)Esterification reactions:
In esterification reactions, TPAB can enhance the reaction between carboxylic acids and alcohols. It can help to overcome the problem of low reactivity due to the immiscibility of the reactants. By facilitating the transfer of reactants between the two phases, it can lead to more efficient ester formation.
3)Nucleophilic substitution reactions:
TPAB can assist in nucleophilic substitution reactions. It can transfer the nucleophile from the aqueous phase to the organic phase where the electrophilic substrate is located. For example, in the reaction between an alkyl halide in the organic phase and a nucleophile like a cyanide ion in the aqueous phase, TPAB can play a crucial role in bringing the two reactants together.
Ion - pair chromatography
TPAB is used as an ion - pair reagent in ion - pair chromatography. In high - performance liquid chromatography (HPLC), it can form ion pairs with analytes that have opposite charges. For example, if the analyte is a negatively charged compound, TPAB (a positively charged quaternary ammonium salt) can form an ion pair with it. This ion - pair formation changes the retention behavior of the analyte on the chromatographic column, allowing for better separation and detection of the analyte. It is especially useful for the analysis of polar and ionic compounds.
Electrochemistry
Supporting electrolyte:
In electrochemical systems such as batteries and electrochemical sensors, TPAB can be used as a supporting electrolyte. In non - aqueous electrochemistry, it provides ions to the electrolyte solution, improving the conductivity of the solution. For example, in some lithium - ion battery research using non - traditional electrolytes, TPAB - based electrolytes have been explored to improve battery performance. It helps in the transfer of charge between the electrodes and stabilizes the electrochemical potential of the system.
Synthesis of materials
Zeolite synthesis:
TPAB can act as a structure - directing agent in the synthesis of zeolites. Zeolites are porous materials with a wide range of applications in catalysis, adsorption, and separation. TPAB can influence the formation of the zeolite's pore structure and crystal morphology during the synthesis process. By interacting with the precursors of the zeolite, it can lead to the formation of zeolites with specific pore sizes and shapes, which are tailored for particular applications such as molecular sieving or selective catalysis.
Huashihang Chemical Group is China leading chemical company.
Jinan Huashihang Chemical Co., Ltd is its sales company with import and export authority. The company was founded in 2004, located in Jinan City, Shandong, China. It started from a small village collective factory, but has now developed into a large private enterprise group with a complete industrial chain.
Being focused on the research, development, production, trade and service of chemicals, Hushihang chemical is a specialized manufacturer and supplier of fine chemicals, cosmetic materials, daily chemicals and food additives.
The company has established a documented system consisting of manual, procedures and instructions, based on the requirements of ISO 9001:2008. The quality policy has been established, understood and maintained. Products are inspected to ensure their suitability to the requirements, and released for delivery only after checking the fulfillment of all specified requirements.
Q1: Could you offer sample?
A1: Yes,sample is available. We can send samples by couriers or air as client's requirements.
Q2: What is MOQ?
A2: It usually does not have MOQ requirement. We will offer the most cost-effective solution including price and delivery way according to purchasing quantities.
Q3: What is the delivery time?
A3: For non-hazardous,it usually has stock. It can be sent within 7 days. For hazardous chemical,it may be 1~2 weeks. If it is our regular product, the time will be earlier.
Q4: Can you provide relevant documents?
A4: Of course. Bill of loading,Commercial Invoice, Packing List, Origin of Certificate , insurance, COA and SDS are available. Besides, we can offer other documents Certificate of Fumigation, documents approved by CCPIT or Consulate,etc.
Q5: Do you accept third party inspection?
A5: Yes,we do.
Q6: What is your payment term?
A6: TT,LC,Paypal,Western Union, ACH wire are available.
Q7: Is DDU or DDP available?
A7: Yes.
Q8: Could you look for other products on China market and coload one container?
A8: Yes. We have warehouse support to accomplish this.
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