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Description and features
Iniper DCP (dicumyl peroxide), is a white crystal which has C18H22O2 as chemical formula. This dialkyl peroxide is used for the (co)polymerization of styrene, besides it is used to crosslink polymers and elastomers. Further it finds its application as flame retardant synergist in EPS.

Dicumyl Peroxide is also known as Diisopropylbenzene peroxide, Bis(α,α-dimethylbenzyl) peroxide and Dicumene hydroperoxide.

Shipment Info
Europe: Provided Iniper DCP is on stock in our local warehouses our lead time is about one week if delivered in 20 KG carton boxes.

United States, Canada, South America, South Africa and other markets can also be served, please contact our sales department for more details.

Product identification
CAS number80-43-3
EC number 201-279-3
HS code2909 60 00
EC name
Bis(α,α-dimethylbenzyl) peroxide
IUPAC name{2-[(2-phenylpropan-2-yl)peroxy]propan-2-yl}benzene
AppearanceWhite crystal
Active oxygen content≥ 5.86
Assay≥ 99.00 %

Iniper DCP is used as crosslinking agent in the production of tires, hoses, wires & cables etc. Further it is used as flame retardant synergist in the production of expanded polystyrene (EPS) which will catalyze the flame retardant action in case of heating. Further it can be used for the (co)polymerization of styrene for temperatures between 110-165 ºCs.

Available packaging: 20 KG carton boxes.
Special packaging is available on request.

Store Dicumyl Peroxide in a cool, dry and well-ventilated area and in line with legal requirements. Keep Iniper DCP away from heat sources, avoid contact with acids, alkalines, heavy metal compounds and reducing agents. The Self Accelerating Decomposition Temperature (SADT) in original packaging is 75ºC.

A Material Safety Data Sheets (MSDS) is available for Iniper DCP and all other products supplied by Vesta Chemicals 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.

This substance (CAS: 80-43-3) has been registered under REACH (EC) 1907/2006.

Molecular and structural information
Molecular formulaC18H22O2
Molecular weight270.40 g/mol
Smiles notationCC(C)(C1=CC=CC=C1)OOC(C)(C)C2=CC=CC=C2
Structural formula
Physicochemical information
Boiling point: Decomposes before boiling.
Bulk density1.107 g/ml @ 20 ºC
Flash point130.7 ºC @ 101 325 Pa
Log Pow5.6 @ 25 ºC
Solubility in water0.43 mg/l @ 20 ºC
Vapor pressure0.001 Pa @ 25 ºC
Dicumyl peroxide | CAS:80-43-3 | 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.