Description and features
Enox TBPB (tert-Butyl Peroxybenzoate) is a yellowish liquid with the chemical formula C11H14O3. As a low volatility, high purity aromatic peroxyester, it serves as an effective medium-temperature initiator for the polymerization of a broad spectrum of monomers. For example, it can initiate the polymerization of acrylics, ethylene, and styrene. It also cures (copolymerizes) unsaturated polyester resins at elevated temperatures. Furthermore, it acts as a catalyst for crosslinking synthetic rubbers such as EPR, EPDM, and NBR.
Availability
Europe: Enox TBPB is in stock in our local warehouses. Our lead time is about one week if delivered in 25 KG PE drums.
We can also serve Canada, South America, South Africa, and other markets. Please contact our sales department for more details.
This substance (CAS: 614-45-9) has been registered (FULL) under REACH (EC) 1907/2006.
Product Identification
| CAS number | 614-45-9 |
| EC number | 210-382-2 |
| HS code | 2916 39 90 |
Half-life data
| Activation energy | 33.0 kcal/mole |
| 10 hr. half-life temp | 105 °C |
| 1 hr. half-life temp | 125 °C |
| 1 min. half-life temp | 167 °C |
Specification
| Appearance | Light yellow transparent liquid |
| Assay | ≧98.50 % |
| Active oxygen | ≧ 8.12% |
| Color | ≤ 50 Hazen |
| Water content | ≤ 2.0 % |
| Tert-butyl hydroperoxide | ≤ 0.005% |
| (In)organic hydrolysable Cl | ≤ 0.005% |
Packaging
Available packaging: 25 KG PE drums.
Special packaging is available on request.
Storage
Store tert-Butyl Peroxybenzoate in a cool, dry, and well-ventilated area, ensuring compliance with legal requirements. Furthermore, keep Enox TBPB away from heat sources and oxidizing agents to ensure safety.
MSDS
A Material Safety Data Sheet (MSDS) is available for Enox TBPB 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 | C11H14O3 |
| Molecular weight | 194.23 g/mol |
| Smiles notation | CC(C)(C)OOC(=O)C1=CC=CC=C1 |
| InChi key | GJBRNHKUVLOCEB-UHFFFAOYSA-N |
| Structural formula |  |
Physicochemical information
| Boiling point | 282.40 °C ± 9.00 °C |
| Density | ± 1.059 g/cm3 @ 20 °C |
| Flash point | 109.70 °C ± 12.80 °C |
| Melting point | 9 °C – 11 °C |
| Partition coefficient (log Pow) | 3.00 @ 25 °C |
| SADT | 60 °C |
| Solubility in water | Moderately soluble (210 -350 mg/l) |
| Vapour pressure | 0.00337 Torr = 0.45 Pa @ 25 °C |