NINGBO INNO PHARMCHEM CO.,LTD. is proud to present tert-Butyl peroxybenzoate (TBPB), a crucial organic peroxide widely recognized by its CAS number 614-45-9. Also known by synonyms such as tert-butyl perbenzoate, t-butyl perbenzoate, and Trigonox C, TBPB is a highly effective free radical source, indispensable across various industrial sectors, particularly in polymer and resin manufacturing.

This organic compound boasts a molecular formula of C11H14O3 and a molecular weight of 194.23 g/mol. TBPB typically appears as a yellowish liquid with a mild aromatic odor. Its physical characteristics include a melting point ranging from 6 to 8 °C, a boiling point around 75-76 °C at 0.2 mmHg, and a flash point of approximately 93°C (199°F). With a density of about 1.02 to 1.04 g/mL at 25 °C, TBPB demonstrates excellent solubility in common organic solvents like ether, alcohol, esters, and ketones, while being virtually immiscible with water.

One of the most defining characteristics of tert-Butyl peroxybenzoate is its thermal stability, crucial for its application as a polymerization initiator. It contains over 8.1 wt% of active oxygen. Its self-accelerating decomposition temperature (SADT) is approximately 60 °C, indicating the need for careful storage and transportation, typically between 10 °C and 50 °C, often as a mixture with inert solids or in a solvent slurry to enhance safety. The half-life of TBPB provides insights into its decomposition rate: it takes 10 hours at 104 °C, 1 hour at 124 °C, and just one minute at 165 °C for 50% of the peroxy ester to decompose. These properties make it a reliable choice for controlled radical reactions.

The applications of tert-Butyl peroxybenzoate are extensive and diverse. In the polymer industry, TBPB serves as a primary initiator for the polymerization of a wide range of monomers. It is extensively used in the production of high-pressure polyethylene (LDPE), polystyrene from styrene, and various acrylic esters. Its efficiency in initiating bulk, solution, and suspension polymerizations makes it vital for manufacturing acrylics, including those used in coatings. Furthermore, TBPB functions as a powerful cross-linking agent for natural and synthetic rubbers, including silicone rubber, and thermoplastic polyolefins, significantly improving the mechanical properties and durability of the finished products.

Beyond polymerization, TBPB is a preferred curing agent for unsaturated polyester resins (UP resins). It is particularly effective for high-temperature curing processes like Hot Press Moulding (SMC, BMC), operating efficiently in the temperature range of 120-170°C. In pultrusion applications, it can be combined with other highly reactive peroxides to achieve desired curing profiles. In organic synthesis, tert-Butyl peroxybenzoate is employed in specialized reactions such as the Kharasch-Sosnovsky oxidation, which introduces a benzoyloxy group at the allyl position of unsaturated hydrocarbons. It also facilitates the oxidative coupling of aromatics like benzene and furans with olefins, expanding its utility in fine chemical synthesis.

As a leading manufacturer and supplier, NINGBO INNO PHARMCHEM CO.,LTD. ensures the production of high-quality tert-Butyl peroxybenzoate (CAS 614-45-9) suitable for various industrial demands. We offer competitive price and reliable supply chains for customers looking to buy or purchase this essential chemical. Our commitment to quality and safety makes us a preferred partner for your chemical sourcing needs. For more information on product specifications, availability, and to inquire about the current price, please contact us. We are dedicated to providing excellent service as your trusted supplier for tert-Butyl peroxybenzoate.