Perovion TBHP L70 is an organic peroxide based on tert-butyl hydroperoxide (TBHP) chemistry, supplied as a 70% aqueous solution for use as a radical initiator in polymerization and curing processes. Perovion TBHP L70 can decompose thermally at elevated temperatures or participate in redox initiation systems at low temperatures, giving formulators flexibility across a wide processing window that spans both high-temperature bulk processes and low-temperature redox-initiated systems. Perovion TBHP L70 is widely used in emulsion and suspension polymerization of styrene, butadiene, acrylonitrile, and (meth)acrylate monomers, as well as in the curing of vinyl ester resin systems.
Perovion TBHP L70 Overview
tert-Butyl hydroperoxide is a hydroperoxide-type organic peroxide, structurally distinct from ketone peroxides and diacyl peroxides, offering a different balance of thermal stability and redox reactivity. Perovion TBHP L70 is supplied as an aqueous solution, which simplifies handling and dosing in water-based polymerization processes such as emulsion and suspension polymerization. Its aqueous compatibility also makes it a practical choice for processes where solvent-based initiators would be undesirable, such as latex production and other water-based polymer manufacturing routes.
As a liquid initiator, Perovion TBHP L70 can be dosed directly into aqueous polymerization systems or combined with a suitable reducing agent to form a redox initiation system active at lower temperatures. In curing applications for vinyl ester resins, Perovion TBHP L70 is typically used together with a cobalt or amine-based accelerator system to achieve the desired gel and cure profile, supporting corrosion-resistant tank, pipe, and lining fabrication.
Key Features
- Aqueous Solution Format: Perovion TBHP L70 is supplied as a 70% solution in water, simplifying handling and dosing in emulsion and suspension polymerization processes compared with solvent-based initiators.
- Dual Initiation Pathways: Perovion TBHP L70 can be activated thermally at elevated temperatures or through a redox mechanism at lower temperatures, giving formulators flexibility to match initiation conditions to the specific reactor design, monomer system, and target molecular weight of the process.
- Broad Monomer Compatibility: Perovion TBHP L70 is suitable for the polymerization of styrene, butadiene, acrylonitrile, and (meth)acrylate monomers, supporting a wide range of polymer production applications from synthetic rubber to acrylic and nitrile-based specialty polymers.
- Vinyl Ester Curing Capability: In addition to polymerization initiation, Perovion TBHP L70 functions as a curing agent for vinyl ester resin systems when combined with an appropriate accelerator.
- High Purity for Sensitive Applications: Perovion TBHP L70 is manufactured to a purity level suitable for demanding polymer production and fine chemical synthesis applications where consistent initiator performance and reproducible reaction kinetics are required batch after batch.
Typical Applications
Perovion TBHP L70 functions as a radical initiator for emulsion and suspension polymerization of styrene, butadiene, acrylonitrile, and (meth)acrylate monomers, supporting the production of a range of specialty and commodity polymers. Its dual thermal and redox activation pathways allow it to be used across both high-temperature and low-temperature polymerization processes.
Common end uses for Perovion TBHP L70 include polymer production and modification, curing of vinyl ester resins in thermoset composite applications, and use as a high-purity oxidizing reagent in fine chemical synthesis and pharmaceutical intermediate manufacturing. It is also applicable to specialty polymer systems where aqueous-compatible initiation is preferred over solvent-based alternatives, and as a viscosity-reducing oxidizer in select oilfield and industrial process applications.
Technical Specifications
- Chemical Type: tert-Butyl hydroperoxide (TBHP)
- CAS No.: 75-91-2
- Physical Form: Aqueous solution
- Concentration: Approximately 70% TBHP in water (indicative for this grade; to be confirmed based on the final specification sheet)
- Thermal Activation: Radical generation typically above 110°C, or via redox initiation at lower temperatures (indicative; to be confirmed based on the final specification sheet)
- Active Oxygen Content: To be confirmed based on the final specification sheet.
- Density at 20°C: To be confirmed based on the final specification sheet.
- Viscosity at 20°C: To be confirmed based on the final specification sheet.
Thermal Stability
- Organic peroxides, including Perovion TBHP L70, are thermally unstable substances and must be handled and stored with appropriate care at all times to avoid accidental decomposition.
- Self-Accelerating Decomposition Temperature (SADT): To be confirmed based on the final specification sheet.
Storage Recommendations
- Recommended maximum storage temperature: To be confirmed based on the final specification sheet.
- Store in a dry, well-ventilated area away from heat sources, direct sunlight, and incompatible materials.
- Keep containers tightly closed and stored upright to prevent leakage and contamination, and label partially used containers clearly for downstream handlers.
- Avoid contact with reducing agents, acids, alkalis, and heavy metal compounds that can accelerate decomposition, except where a controlled redox initiation system is intended.
- Rotate stock on a first-in, first-out basis and inspect containers periodically for signs of leakage or damage.
Packaging & Transport
- Standard Packaging: Available in approved industrial packaging, such as drums or IBCs; exact options to be confirmed based on the final specification sheet.
- Net Weight: To be confirmed based on the final specification sheet.
- UN Number: To be confirmed based on the final specification sheet.
- Transport Class: To be confirmed based on the final specification sheet.
- Certificate of Analysis (COA): Provided per batch upon shipment, confirming concentration and key quality parameters.
- Documentation: Labels and Safety Data Sheet (SDS) prepared in accordance with transport and destination regulations; industrial use only.
Perovion TBHP L70: Safety & Handling
Perovion TBHP L70 should be handled in accordance with applicable safety procedures for organic peroxides. The product is classified as an oxidizing and thermally unstable material and requires appropriate storage, segregation, and handling measures to prevent accidental decomposition or contamination. Users are advised to review the Safety Data Sheet prior to handling and to implement suitable personal protective equipment and engineering controls, including eye protection, chemical-resistant gloves, and adequate ventilation in the work area, given the oxidizing nature of the aqueous solution.
Spills should be contained and cleaned up promptly using absorbent materials compatible with organic peroxides, and contaminated waste should be disposed of according to local regulations and destination-specific environmental requirements, particularly given the aqueous nature of the solution. Safety Data Sheet and destination-compliant labeling information for Perovion TBHP L70 are available upon request. For related products, see also Perovion CHP L80 and Perovion CHP L90.