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Trigonox® 117 can be used as an initiator for the polymerization and copolymerization of styrene in the temperature range between 100°C and 130°C. In a mass process Trigonox® 117 can be advantageously used to increase polymerization rates. In suspension polymerization processes Trigonox® 117 is an efficient peroxide for reduction of residual styrene concentration during the final polymerization stage.
Trigonox 117 is tert-butylperoxy 2-ethylhexyl carbonate (TBEC, CAS 34443-12-4) from Nouryon, a liquid peroxycarbonate with an assay of at least 95 %. It initiates the polymerization and copolymerization of styrene between 100 °C and 130 °C.
In mass processes it raises the polymerization rate; in suspension polymerization it reduces residual styrene in the final stage. For styrene processes at somewhat higher temperatures, compare Trigonox C; for a wider 90–140 °C window, see Trigonox 42S. See all grades in the organic peroxide range.
| Property | Value |
| Chemical name | tert-Butylperoxy 2-ethylhexyl carbonate (TBEC) |
| CAS number | 34443-12-4 |
| EINECS / ELINCS | 252-029-5 |
| Molecular weight | 246.3 |
| Appearance | Clear liquid, ≤ 50 Pt-Co |
| Assay | ≥ 95.0 % |
| Active oxygen | 6.17–6.49 % |
| Hydroperoxides (as TBHP) | ≤ 0.099 % |
| Density / viscosity, 20 °C | 0.930 g/cm³ / 5.8 mPa·s |
| Half-life temperature, 10 h / 1 h / 0.1 h (chlorobenzene) | 98 °C / 117 °C / 137 °C |
| Activation energy | 151.72 kJ/mol |
| SADT | 60 °C |
| Maximum storage temperature (Ts max) | 20 °C |
| Transport classification | Organic peroxide type D, liquid; Division 5.2; UN 3105 |
| Standard packaging | 30 L HDPE can, 25 kg net |
| Shelf life | At least 3 months after delivery when stored as recommended |
The Trigonox 117 product data sheet (TDS/PDS) lists specifications, thermal stability data and storage limits. The safety data sheet (SDS/MSDS) covers hazard classification, transport and emergency measures. English documents can be downloaded below; Chinese versions are available on request.
Mass polymerization of styrene: raises the polymerization rate at 100–130 °C.
Suspension polymerization of styrene: reduces residual styrene in the final stage.
Other segments: listed by Nouryon for polymer crosslinking, thermoset composites and acrylics; ask for the application data sheet.
Store Trigonox 117 below 20 °C in tightly closed original containers, in a dry, well-ventilated area away from heat, ignition sources and direct sunlight. Never weigh it out in the storage room, and keep it away from reducing agents such as amines, acids, alkalis and heavy metal compounds.
Q: What is Trigonox 117?
A: Trigonox 117 is Nouryon's tert-butylperoxy 2-ethylhexyl carbonate (TBEC), CAS 34443-12-4, with an assay of at least 95 %. It initiates styrene polymerization and copolymerization.
Q: At what temperature is Trigonox 117 used?
A: It is used for styrene (co)polymerization between 100 °C and 130 °C. Its 10-hour half-life temperature is 98 °C and its 1-hour half-life temperature is 117 °C.
Q: How does Trigonox 117 reduce residual styrene?
A: In suspension polymerization it is used in the final stage, where it lowers the residual styrene content.
Q: How should Trigonox 117 be stored?
A: Store it below 20 °C in closed original containers, away from heat, ignition sources, reducing agents, acids, alkalis and heavy metal compounds. Under these conditions it stays within specification for at least 3 months after delivery.
Q: Where can I get the Trigonox 117 TDS and SDS?
A: The English product data sheet and safety data sheet can be downloaded on this page. Send an inquiry for Chinese versions.
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