Description and features
CatOnium TPPBr (Tetraphenylphosphonium Bromide) is a white to off-white compound with the chemical formula C24H20BrP. As a quaternary phosphonium salt, TPPBr is primarily used in pharmaceuticals. Specifically, it acts as an accelerator and adhesion promoter for fluoroelastomers, while also serving as a curative for polyacrylate polymers. Additionally, it extends the shelf life of these materials and reduces mold fouling. Moreover, this compound is highly soluble in water and slightly soluble in alcohols, making it versatile for various applications.
Known as TPP, TPP-Br, TPPB, and TPPBr, Tetraphenylphosphonium Bromide offers significantly better latency and thermal stability compared to amines, imidazoles, and quaternary ammonium salts. Additionally, it provides low odor, minimal color formation, and controlled reactivity.
Availability
Europe and United States: Provided CatOnium TPPBr is in stock in our local warehouses our lead time is about one week if delivered in 25 KG drums.
We can also serve Canada, South America, South Africa, and other markets. Please contact our sales department for more details.
Limited availability in the European Union (< 1.000 KG) as this product has not been REACH registered. ➔ Registration in progress.
Product Identification
| CAS number | 2751-90-8 |
| EC number | 220-393-4 |
| HS code | 2931 39 00 |
| Sensitivity | Hygroscopic |
Specification
| Appearance | White to off white powder |
| Assay | ≥ 99.00 % |
| Loss on drying | ≤ 1.00 % |
| Triphenyl phosphine | ≤ 0.50 % |
Application
CatOnium TPPBr (Tetraphenylphosphonium Bromide) is applied in fluoroelastomers and polyacrylate polymers.
Packaging
Available packaging: 20 KG fiber drums.
Special packaging is available on request.
Storage
Store Tetraphenylphosphonium Bromide in a cool, dry and well-ventilated area and in line with legal requirements.
Keep TPPBr away from heat sources and oxidizing agents.
MSDS
A Material Safety Data Sheet (MSDS) is available for CatOnium TPPBr 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 | C24H20BrP |
| Molecular weight | 419.29 g/mol |
| Chemical formula |  |
| InChi key | BRKFQVAOMSWFDU-UHFFFAOYSA-M |
Physicochemical information
| Boiling point | 457.77 ºC |
| Flash point | > 260 ºC |
| Melting point | 294 – 297 °C |
| Log Kow | 5.28 |
| Solubility in water | Soluble @ 20 ºC |
| Vapor pressure | 4.2E-005 Pa |