Description and features
Catonium ETPAAC (Ethyltriphenylphosphonium Acetate) is a colorless to slightly yellow liquid with the chemical formula C22H23O2P. This quaternary phosphonium salt is available in a 70% by weight solution in methanol. Notably, one mole of acetic acid is bound to each mole of ETPAAC. Furthermore, the material is mainly used for the advancement and curing of phenolic-based epoxy resins, as well as serving as a phase transfer catalyst.
Ethyltriphnylphosphonium Acetate also known as ETPAAC, ETPAACc and TEPA.
Compared to amines, imidazoles and quaternary ammonium salts CatOnium ETPAAC 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.
Shipment Info
Europe and United States: Provided CatOnium ETPAAC is in stock in our local warehouses our lead time is about one week if delivered in 200 KG drums.
We can also serve Canada, South America, South Africa, and other markets. Please contact our sales department for more details..
➔ Limited available in the European Union as this product has not been REACH registered (yet).
Product Identification
| CAS number | 35835-94-0 |
| EC number | 252-743-7 |
| HS code | 2931 39 90 |
| Sensitivity | Hygroscopic |
Specification
| Appearance | Colourless to slightly yellow liquid |
| Assay | ≥65 – 70 % |
| Cl | ≤0.50 % |
| Triphenyl phosphine | ≤0.50 % |
Application
CatOnium ETPAAC (Ethyltriphenylphosphonium Acetate) is applied in the production of epoxy resins and as phase transfer catalyst.
Packaging
Available packaging: 200 KG drums.
Special packaging is available on request.
Storage
Store Ethyltriphenylphosphonium Acetate in a cool, dry, and well-ventilated area, ensuring compliance with legal requirements. Additionally, keep ETPAAC away from heat sources and oxidizing agents to maintain safety and stability.
MSDS
A Material Safety Data Sheet (MSDS) is available for CatOnium ETPAAC and all other products supplied by Vesta Chemicals bv.
An MSDS outlines the hazards of a product and explains how to handle, use, and store the product safely. Besides it provides important regulatory and emergency response information for the purchased product.
Molecular and structural information
| Molecular formula | C22H23O2P |
| Molecular weight | 350.39 g/mol |
| Structural formula |  |
| InChi key | HZZUMXSLPJFMCB-UHFFFAOYSA-M |
Physicochemical information
| Boiling point | 275 ºC @ 101 325 Pa |
| Relative density | 1.19 @ 20 ºC |
| Flash point | No data available |
| Melting point | 79.8 ºC @ 101 325 Pa |
| Partition coefficient (log Pow) | -0.64 @ 23.5 ºC |
| Solubility in water | 938 g/L @ 20 ºC |
| Vapor pressure | 1.08 exp-7 Pa at 25°C |