Shandong Huashang Chemical Co., Ltd. is a high-tech enterprise focused on industry of fine chemicals research and develop, produce and sale. Shandong Huashang Chemical Co., Ltd. is located in Shan Dong Ji Nan China. we have the ability to provide you high quality products. More than 90 % of our products are exported to developed countries and regions such as north America, Europe, Japan, South Korea and the Middle East.
Tetrapropylammonium bromide
1. Basic Information
Name: Tetrapropylammonium bromide
Alias: TPAB, Tetra-n-propylammonium bromide
CAS No.: 1941-30-6
Molecular Formula: C12H28BrN
Molecular Weight: 266.26
Category: Quaternary ammonium phase transfer catalyst, ion pair chromatography reagent, zeolite template agent, electrochemical electrolyte additive
2. Physical and Chemical Properties
Physical Properties
- Appearance: White crystalline powder
- Odor: Faint mild amine odor
- Solubility: Freely soluble in water, methanol, ethanol; soluble in acetone, dichloromethane; slightly soluble in ethyl acetate; insoluble in hexane, toluene
- Melting Point: 266–268 ℃ (decomposes)
- Density (predicted): 1.14 g/cm3
- Hygroscopy: Moderately hygroscopic, easy to absorb moisture and agglomerate under high humidity
- Aqueous property: Aqueous solution neutral to weakly acidic, stable at room temperature
Chemical Properties
- Molecular structure: Four n-propyl groups attached to central nitrogen cation, paired with bromide anion; lipophilic quaternary ammonium salt with excellent phase transfer performance
- Phase transfer catalysis: Efficient catalyst for biphasic organic-water reactions (substitution, oxidation, reduction), accelerates transfer of inorganic anions into organic phase
- Ion pairing effect: Forms stable ion pairs with acidic organic compounds, used for HPLC ion pair analysis
- Zeolite template function: Template reagent for synthesizing microporous molecular sieves with specific pore channels
- Thermal stability: Stable below 200 ℃; above melting point decomposes to release propyl bromide and tertiary amine
- Photostability: Good light resistance, no discoloration under long-term light storage
- Compatibility: Compatible with most polar solvents; incompatible with strong oxidants, concentrated strong alkali at high temperature
3. Main Application Fields
1. Phase Transfer Catalyst (Core Application)
Widely used in fine chemical, pharmaceutical, pesticide biphasic synthesis reactions to improve reaction yield and reduce reaction temperature
2. Chromatography Analytical Reagent
Ion pair reagent for reversed-phase HPLC, used for separation detection of water-soluble organic acids, amino acids, polypeptides
3. Molecular Sieve Synthesis Template
Organic template agent for preparing ZSM series and other microporous zeolite catalysts
4. Electrochemical Auxiliary
Supporting electrolyte additive for organic electrochemistry experiments, lithium battery auxiliary additive
4. Quality Specification Table
| Test Item | Standard Specification |
| CAS Number | 1941-30-6 |
| Molecular Formula | C12H28BrN |
| Appearance | Uniform white crystal powder without yellowing |
| HPLC Purity | Catalyst Grade ≥99.0%, Chromatography Grade ≥99.5% |
| Water Content (KF) | ≤1.00% |
| Residue on Ignition | ≤0.10% |
| Bromide Content | Qualified |
| Heavy Metals (Pb) | ≤5 ppm |
| Packaging | Nitrogen-filled aluminum foil vacuum bag; bulk 25kg PE lined fiber drum |
| Storage Condition | Hermetically sealed cool dry warehouse below 25 ℃, isolate humid air and strong oxidants |
| Transportation Requirement | Slightly hygroscopic quaternary ammonium salt powder, moisture-proof sealed packaging |
| Shelf Life | 24 months under nitrogen vacuum sealed storage |
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