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Description and features
Iniper 117 (Tert butyl peroxy 2-ethylhexyl monocarbonate) is a clear liquid which has C13H26O4 as chemical formula. It is mainly used as radical initiator to induce polymerization for the production of EPS (expanded polystyrene), ethylene, acrylates and methacrylates. Further it is used for the crosslinking of natural and synthetic rubbers as well as thermoplastic elastomers. Lastly it is used for the curing of unsaturated polyester resins at elevated temperatures.

Product information

CAS number34443-12-4
EC number 252-029-5
HS code2920 90 10

Molecular and structural information

Molecular formulaC13H26O4
Molecular weight246.30 g/mol
Smiles notationCCCCC(CC)COC(=O)OOC(C)(C)C
Structural formula:34443-12-4


AppearanceClear liquid
Assay≥95.00 %
Active oxygen6.49 %
HPO<0.10 %

Physicochemical information

Density0.972 g/cm3 @ 20 °C
Flash point100 °C, ± 1 °C @ 101.3 kPa
Melting point-90 °C, ±25 °C
Partition coefficient (log Pow)5.55
Solubility in waterSlightly soluble (5.39 mg/l)
Vapour pressure0.57 Pa @ 25 °C

Half life values

Available packaging: 10 KG, 16 KG, 16.50 KG and 25 KG PE drums.
Special packaging is available on request.

Shipment Info
Europe and United States: Provided Iniper 117 is on stock in our local warehouses our lead time is about one week if delivered in 25 KG drums.
Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details.

Store Tert butyl peroxy 2-ethylhexyl monocarbonate in a cool, dry and well-ventilated area and in line with legal requirements.
Keep Iniper 117 away from heat sources and oxidizing agents.

This substance (CAS: 34443-12-4) has been registered (FULL substance) under REACH (EC) 1907/2006.

A Material Safety Data Sheets (MSDS) is available for Iniper 117 and all other products supplied by Vesta Intracon BV. An MSDS describes the hazards of a product and explains how a product can be safely handled, used and stored. Besides it provides important regulatory and emergency response information for the purchased product.

Tert butyl peroxy 2-ethylhexyl monocarbonate: Disclaimer. This information is supplied solely for informational purposes and Vesta Intracon bv makes no guarantees or warranties, either expressed or implied, with respect to the accuracy and use of this data. All product warranties and guarantees shall be governed by the Standard Terms of Sale. Nothing in this document is legal advice or is a substitute for competent legal advice.