Trigonox K-80 is a high-purity cumyl hydroperoxide (CHP) initiator supplied as an 80.0–85.0% active clear liquid in aromatic solvent. With an active oxygen content of 8.40–8.94% and low viscosity (10.4 mPa.s at 20℃), it functions as a radical initiator for polymer production, thermoset composite curing, and acrylic polymerization. Its higher decomposition temperature compared to ambient-cure peroxides such as MEKP or BPO makes Trigonox K-80 suitable for processes that require initiation or curing at elevated temperatures.
Key Benefits
- High active oxygen content (8.40–8.94%) supports efficient initiation at practical dosage levels
- Clear, low-color liquid (≤ 200 Pt-Co) minimizes discoloration in finished polymers and composites
- Low viscosity (10.4 mPa.s at 20℃) for easy metering and blending into resin or monomer systems
- Suited to elevated-temperature curing and polymerization processes where ambient-cure peroxides are not appropriate
- Consistent quality supported by technical documentation for every shipment
Technical Specifications of Trigonox K-80
| Property | Value |
|---|---|
| Appearance | Clear liquid |
| Active oxygen | 8.40–8.94% |
| Assay | 80.0–85.0% |
| Color | ≤ 200 Pt-Co |
| Density, 20℃ | 1.06 g/cm³ |
| Viscosity, 20℃ | 10.4 mPa.s |
| CAS number | 80-15-9 (cumyl hydroperoxide) |
Trigonox K-80 is based on cumyl hydroperoxide (CAS 80-15-9), one of the more established peroxide chemistries used across polymer and composite manufacturing. Its clear, low-color profile at ≤ 200 Pt-Co is a relevant spec for applications where discoloration of the finished part is a concern.
The relatively low viscosity of Trigonox K-80 (10.4 mPa.s at 20℃) is also worth noting for plants that meter liquid initiators through pumps or inline blending equipment, since a lower-viscosity liquid is generally easier to dose accurately at low addition rates than a thicker paste or solid peroxide would be. This can simplify integration into existing liquid dosing systems already used for other peroxide grades.
Applications for Trigonox K-80
Trigonox K-80 is used across three main market segments:
- Polymer production – as a radical initiator in polymerization processes, particularly where a higher decomposition temperature is needed to control reaction rate.
- Thermoset composites – as a curing initiator for unsaturated polyester and vinyl ester resin systems processed at elevated temperature, such as pultrusion, filament winding, and hot-press molding.
- Acrylics production – as an initiator for (co)polymerization of acrylate and methacrylate monomers.
Selection Guide: Choosing Between High- and Low-Temperature Initiators
Compared to ambient-cure peroxide initiators such as MEKP or BPO, Trigonox K-80 is designed for processes that run at higher temperatures, where a higher decomposition temperature is needed to control the reaction. If a process runs at ambient to moderate temperature, an MEKP or BPO-based system may be more suitable; for hot-press molding, pultrusion, or elevated-temperature polymerization, this initiator is typically the better fit.
Formulators should confirm decomposition temperature and half-life against their own process conditions, since the choice between these initiator families depends on resin type, mold or oven temperature, and target cure time. As a general guide, initiators are usually selected to have a half-life of a few minutes at the intended process temperature, so matching the decomposition profile to the actual mold, oven, or reactor temperature is a more reliable starting point than comparing initiators on assay percentage alone.
Technical Support and Documentation
Buyers evaluating Trigonox K-80 for a specific resin or monomer system can request dosage, compatibility, and process optimization guidance, including comparison with alternative peroxide grades. Certificate of Analysis (COA) and Safety Data Sheet (SDS/MSDS) documentation are available on request for each shipment, and should be reviewed for full handling, storage, and safety guidance before use.
Packaging and Shipping
Trigonox K-80 is available in standard drum packaging for bulk industrial supply, with global shipping support for composite, resin, and polymer manufacturers. Contact chemicalsstore.com for current packaging options, minimum order quantities, and lead times to your destination.
Frequently Asked Questions
What is Trigonox K-80 used for?
It is used as a radical initiator in polymer production, as a curing agent for thermoset composites (unsaturated polyester and vinyl ester resins) at elevated temperature, and as an initiator for acrylate/methacrylate polymerization.
How does it differ from MEKP or BPO?
Trigonox K-80 has a higher decomposition temperature, making it more suitable for elevated-temperature curing and polymerization processes, while MEKP and BPO are typically used for ambient-temperature curing.
Is COA/MSDS available for each batch?
Yes. Certificate of Analysis and Safety Data Sheet documentation are available on request for each shipment.
How should it be stored?
As with other organic peroxides, store in a cool, well-ventilated area away from direct sunlight and heat sources, and away from incompatible materials. Refer to the SDS for complete storage and handling guidance.
Can chemicalsstore.com help select the right grade?
Yes. Share the target resin or monomer system, process temperature, and target cure or reaction time, and the technical team can help confirm the appropriate grade and dosage.
To request current availability, a technical data sheet, or COA/MSDS for Trigonox K-80, contact the chemicalsstore.com sourcing team with your target volume and application details.
