Trigonox 25-C75 is a liquid organic peroxide initiator supplied at 75% concentration, based on tert-butyl peroxypivalate (CAS 927-07-1, chemical short name TBPP). It is formulated for polymer production processes, including LDPE, PVC, and acrylic monomer polymerization. This page summarizes the specification data published for this initiator so polymer producers and formulators can evaluate it for sourcing.
What Is Trigonox 25-C75?
Trigonox 25-C75 is a clear liquid peroxide initiator with an active oxygen content of 6.79–6.98% and an assay of 74.0–76.0%, consistent with its “C75” designation. It is based on tert-butyl peroxypivalate (CAS 927-07-1), a peroxyester commonly used as a radical initiator in polymer production. Color is limited to ≤ 20 Pt-Co, hydroperoxides as TBHP are kept to ≤ 0.099%, and inorganic plus organic hydrolysable chloride is limited to ≤ 100 mg/kg, reflecting a purity level suited to controlled polymerization processes.
Technical Specifications of Trigonox 25-C75
The table below lists the core specification and physical properties published for this product.
| Property | Value |
|---|---|
| Appearance | Clear liquid |
| Active oxygen | 6.79–6.98% |
| Assay | 74.0–76.0% |
| Color | ≤ 20 Pt-Co |
| Hydroperoxides as TBHP | ≤ 0.099% |
| Hydrolysable chloride (inorganic + organic) | ≤ 100 mg/kg |
| Crystallization point | -17℃ |
| Density, 0℃ | 0.875 g/cm³ |
| Viscosity, 20℃ | 2.1 mPa.s |
| CAS number | 927-07-1 (tert-butyl peroxypivalate) |
The low viscosity (2.1 mPa.s at 20℃) and low crystallization point (-17℃) of Trigonox 25-C75 are relevant to how a plant handles and doses the initiator, since a liquid peroxide with these properties can be pumped and metered at typical ambient plant temperatures without special heating for most regions.
How This Initiator Is Used in Polymerization
As a peroxyester-type initiator, tert-butyl peroxypivalate grades such as Trigonox 25-C75 decompose at moderate temperatures to generate free radicals that start the polymerization reaction. This class of initiator is used in polymer production and acrylics production, covering applications such as low-density polyethylene (LDPE) polymerization, PVC suspension polymerization, and acrylic monomer polymerization, where a fast-acting, low-temperature initiator is required to control reaction rate and molecular weight.
Applications for Trigonox 25-C75
Trigonox 25-C75 can be used across polymer production and acrylics production market segments, each with its own dosage and process requirements. Producers evaluating this organic peroxide initiator for a specific polymerization line should confirm decomposition temperature, half-life, and recommended dosage against their own reactor conditions before scaling to production volume, since optimal initiator loading depends on batch size, reactor design, and target molecular weight distribution.
Peroxyester initiators in this family are generally selected over higher-temperature initiators when a process needs radical generation to begin at moderate reactor temperatures, which can help control exotherm and reduce the risk of runaway reaction in large batch or continuous polymerization systems. Because Trigonox 25-C75 is supplied as a liquid rather than a solid or paste, it is also generally easier to meter through standard liquid dosing pumps than powder-form peroxides, which is a practical consideration for plants running continuous LDPE or PVC lines with automated initiator feed systems.
Handling Considerations
As with other organic peroxide initiators, Trigonox 25-C75 should be stored, transported, and handled in line with standard organic peroxide practice: keep it refrigerated or within its recommended storage temperature range, away from heat and direct sunlight, and separate from contamination sources and incompatible materials. Buyers should request the current Technical Data Sheet and Safety Data Sheet from the supplier for full handling, storage temperature, and shelf-life guidance specific to their shipment and packaging format before use.
Sourcing This Initiator Through chemicalsstore.com
Polymer producers and formulators sourcing Trigonox 25-C75 can contact chemicalsstore.com for current availability, supply chain resource support, and coordination on order volumes, packaging, and documentation requests, including the manufacturer’s Technical Data Sheet and Safety Data Sheet. As a Nouryon-branded organic peroxide, it can also be sourced together with related initiators and accelerators to simplify procurement for a single production batch.
Frequently Asked Questions About Trigonox 25-C75
What is Trigonox 25-C75 made of?
It is tert-butyl peroxypivalate (CAS 927-07-1) supplied as a 74.0–76.0% assay clear liquid, with an active oxygen content of 6.79–6.98%.
What is it used for?
It is used as a radical initiator in polymer production and acrylics production, including applications such as LDPE, PVC, and acrylic monomer polymerization processes.
What is its viscosity and crystallization point?
Viscosity is 2.1 mPa.s at 20℃, and the crystallization point is -17℃, with a density of 0.875 g/cm³ at 0℃.
Why is Trigonox 25-C75 supplied at 75% concentration?
The 75% assay level, reflected in the “C75” designation, balances active peroxide content against handling safety and dosing precision for production-scale polymerization processes.
How should it be stored?
As with other organic peroxide initiators, keep it within its recommended storage temperature range, away from heat and direct sunlight. Contact the supplier for the current Technical Data Sheet and Safety Data Sheet for full storage guidance.
To request current availability, technical documentation, or a formal quotation for Trigonox 25-C75, contact the chemicalsstore.com sourcing team with your target volume and application details.
