Description and features
Catonium ETPI (Ethyltriphenylphosphonium Iodide) is a white to off-white crystalline powder, its chemical formula is C20H20P. ETPI is a quaternary phosphonium salt mainly used for the advancement and / or curing of phenolic based epoxy resins and thermosetting powder coatings. It can also be used in organic synthesis as a wittig reagent and as a phase transfer catalyst in the production of fluoroelastomers . This material is highly soluble in water and polarizable solvents.
Ethyltriphnylphosphonium Iodide is also known as ETPI, ETPPI and TPEP-I.
Compared to amines, imidazoles and quaternary ammonium salts CatOnium ETPI features considerable better latency and thermal stability. Further it offers a low odor, minimal color formation and controlled reactivity. It decreases or eliminates side reactions and creates longer, straighter chain epoxy molecules which have a sharp molecular weight distribution.
Availability
Europe and United States: Provided CatOnium ETPI is on stock in our local warehouses our lead time is about one week if delivered in 25 KG drums.
Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details.
Product Identification
| CAS number | 4736-60-1 |
| EC number | 225-245-2 |
| HS code | 2931 39 90 |
| Sensitivity | Hygroscopic |
Specification
| Appearance | White to off crystal powder |
| Assay | ≥ 99.00 % |
| Loss on drying | ≤0.20 % |
| Triphenyl phosphine | ≤ 0.50 % |
Application
CatOnium ETPI (Ethyltriphenylphosphonium Iodide) is being used in fluoroelastomers, thermosetting powder coatings and phenolic based epoxy resins.
Packaging
Available packaging: 25 KG.
Special packaging is available on request.
Storage
Store Ethyltriphenylphosphonium Iodide in a cool, dry and well-ventilated area and in line with legal requirements.
Keep ETPI away from heat sources and oxidizing agents.
MSDS
A Material Safety Data Sheets (MSDS) is available for CatOnium ETPI and all other products supplied by Vesta Chemicals BV.
An MSDS describes the hazards of a product and explains how a product can be safely handled, used and stored. Besides it provides important regulatory and emergency response information for the purchased product.
Molecular and structural information
| Molecular formula | C20H20IP |
| Molecular weight | 418.26 g/mol |
| Smiles notation | [P+](c1ccccc1)(c1ccccc1)(c1ccccc1)CC.[IH-] |
| InChi key | SLAFUPJSGFVWPP-UHFFFAOYSA-M |
| Chemical formula |  |
Physicochemical information
| Boiling point | > 360 ºC |
| Relative density @ 20 ºC | 1.47 g/cm3 |
| Flash point | Not tested |
| Melting point | 170 °C |
| Partition coefficient (log Pow) | 0.324 @ 25 ºC |
| Solubility in water | 7.84 g/L (20.1O ºC) |
| Vapor pressure | 0 Pa @ 25 ºC |