Products Description
Ethyltriphenylphosphonium Bromide (ETPB) is a versatile quaternary phosphonium salt characterized by its off-white crystalline appearance and favorable solubility in common organic media. Beyond its established utility as a specialized dyeing auxiliary, ETPB exhibits inherent antiviral activity similar to related phosphonium salts.
Its core strength lies in its dual function as a highly efficient phase-transfer catalyst (PTC) and a premier reaction reagent, making it indispensable across polymer science, fine chemical manufacturing, and medicinal chemistry.
| Product Name: | Ethyltriphenylphosphonium bromide |
| Synonyms: | Ethyltriphenylbromophosphine;ethyltriphenyl-phosphoniubromide;Ethyl(trisphenyl)phosphonium bromide;Ethyl triphenyl phosphoniuM broMide (ETPB);TEP (oniuM coMpound);ETHYLTRIPHENYLPHOSPHONIUM BRIMIDE;ethyl triphenylphosphoiuum bromide;ETHYLTRIPHENYLPHOSPHONIUM BROMIDE 99+% |
| CAS: | 1530-32-1 |
| MF: | C20H20BrP |
| MW: | 371.25 |
| EINECS: | 216-223-3 |
| Product Categories: | Phosphonium SaltsC-C Bond Formation;Greener Alternatives: Catalysis;C-C Bond Formation;Olefination;Wittig Reagents;Phase Transfer Catalysts;Phosphonium Compounds;Synthetic Organic Chemistry;Wittig & Horner-Emmons Reaction;Wittig Reaction;organophosphorus compound |
| Mol File: | 1530-32-1.mol |
Ethyltriphenylphosphonium bromide Chemical Properties
| Melting point | 203-205 °C(lit.) |
| Boiling point | 240℃[at 101 325 Pa] |
| Density | 1.38[at 20℃] |
| Vapor pressure | 0-0.1Pa at 20-25℃ |
| Fp | 200 °C |
| Storage temp | Inert atmosphere,Room Temperature |
| Solubility | 174g/l soluble |
| Form | Crystalline Powder |
| Color | White to off-white |
| Water Solubility | 120 g/L (23 ºC) |
| Sensitive | Hygroscopic |
| BRN | 3599630 |
| InChIKey | JHYNXXDQQHTCHJ-UHFFFAOYSA-M |
| LogP | -0.69--0.446 at 35℃ |
| CAS DataBase Reference | 1530-32-1(CAS DataBase Reference) |
| EPA Substance Registry System | Phosphonium, ethyltriphenyl-, bromide (1530-32-1) |
Product Application
ETPB serves key catalytic, synthetic, and industrial roles across multiple advanced chemistry disciplines:
Polymer Chemistry & Curing Catalyst: Promotes rapid, efficient cross-linking and curing in phenolic-cured epoxy resins, high-performance fluoroelastomers, and thermosetting powder coatings.
Asymmetric & Organic Synthesis: Functions as a critical reactant and catalyst in complex transformations, including Horner–Wadsworth–Emmons olefinations, Mizoroki–Heck cyclizations, and cascade Tsuji–Trost reactions.
Pharmaceutical Development: Acts as a specialized key intermediate for target therapeutics, enabling the synthesis of D-amino acids from thiazolidines, Leiodolide A (via aldol coupling), and cycloalkanoindolines via intramolecular imino-ene pathways.
Materials & Dyeing Applications: Applied as a dye-assist reagent in textile processing and as a key reagent in solid-state metathesis polycondensation for functional alkyl-dipropenylthiophene monomers.
