Hangzhou Leap Chem Co., Ltd. is one of the most professional manufacturers and suppliers of tetraphenylphosphonium bromide丨cas 2751-90-8 in China. Welcome to wholesale custom made chemical products at competitive price from our factory. For more cheap products, contact us now.
Specifications
|
Appearance: |
White to off white powder, White powder |
|
Active Assay (w/w): |
98.50% min |
|
Triphenyl phosphine and phosphonium oxide (by HPLC): |
1.0% max |
|
Ash: |
0.5% max |
|
Loss on drying (at 105℃): |
1.0% max |
Transport Information
|
Parameter |
Specification |
|
UN Number |
|
|
Class |
|
|
Packing Group |
|
|
H.S. Code |
2934999099305 |
|
Stability & Reactivity |
The product is chemically stable under standard ambient conditions. |
|
Storage |
Store in cool place. Keep container tightly closed in a dry and well-ventilated place. Humidity sensitive |
|
Condition to Avoid |
|
|
Package |
Tetraphenylphosphonium bromide丨CAS 2751-90-8 is an organic phosphonium salt composed of the tetraphenylphosphonium cation (Ph₄P⁺) and a bromide anion (Br⁻). The large, bulky tetraphenylphosphonium ion provides stability and lipophilicity, which makes this salt widely useful in various chemical contexts.
Applications
1. Phase-Transfer Catalyst (PTC)
Tetraphenylphosphonium bromide丨CAS 2751-90-8 acts as a phase-transfer catalyst in organic synthesis by facilitating the transfer of ions or reactants between immiscible liquid phases (e.g., aqueous and organic).
Enhances reaction rates and yields in nucleophilic substitutions, oxidations, and other transformations.
2. Precursor in Organic Synthesis
Used as a reagent or intermediate for the preparation of other phosphonium salts or ylides, which are crucial in the Wittig reaction to form alkenes.
Tetraphenylphosphonium bromide can be converted into phosphonium ylides by treatment with strong bases.
3. Ion Pairing Agent
Utilized in analytical chemistry to form ion pairs with negatively charged species, improving their extraction, detection, or separation.
Used in chromatography and mass spectrometry as an ion pairing agent for improved sensitivity.
4. Electrochemistry
Sometimes used as an electrolyte or supporting salt in electrochemical studies due to its good ionic conductivity and electrochemical stability.
5. Biochemistry and Membrane Studies
Employed to prepare lipophilic salts that can cross biological membranes, aiding in transport studies or biochemical assays.
Benefits
Large, hydrophobic cation enhances solubility in organic solvents.
Facilitates efficient phase-transfer catalysis for greener and more selective chemical processes.
Provides a stable, crystalline compound with ease of handling.
Useful in preparing phosphonium ylides for key organic reactions.
Summary
Tetraphenylphosphonium bromide丨CAS 2751-90-8 is a versatile organic phosphonium salt widely employed as a phase-transfer catalyst, reagent in organic synthesis, and ion-pairing agent. Its large, hydrophobic tetraphenylphosphonium cation imparts beneficial solubility and stability properties that facilitate numerous chemical and biochemical applications. It is especially important in facilitating green chemistry processes and synthetic transformations such as the Wittig reaction.
If you want, I can provide example reaction schemes or more detailed uses in catalysis or synthesis!
