CAS · 2751-90-8
Product Overview
Tetraphenylphosphonium bromide is a high-purity catalysts-auxiliary-agent supplied for industrial and specialty chemical applications. Contact our team for specifications, packaging options and lead times.
Product 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 |
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.
Conclusion
A concise summary and suitability assessment for this product is available on request. Contact our team to discuss whether it fits your process and quality requirements.