Description and features
Catonium ETPAAC (Ethyltriphenylphosphonium Acetate) is a colourless to slightly yelow liquid, its chemical formula is C22H23O2P. ETPAAC is a quaternary phosphonium salt available in 70% by weight solution in methanol. One mole of acetic acid is bound to each mole of ETPAAC. The material is mainly used for the advancement and curing of phenolic based epoxy resins and 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 on stock in our local warehouses our lead time is about one week if delivered in 200 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 | 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 and in line with legal requirements.
Keep ETPAAC away from heat sources and oxidizing agents.
MSDS
A Material Safety Data Sheets (MSDS) is available for CatOnium ETPAAC 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 | 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 |