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Desciption and features
Enox 101 (2-5-Dimethyl-2-5-di-tert-butylperoxy-hexane) is a yellowish liquid which has C16H34O4 as chemical formula. It is used to cure polymers and elastomers, mainly polyethylene ( LDPE, HDPE),  ethylene propylene diene monomer (EPDM), sillicone rubber and fluoroelastomers. Further it acts as initiator for the production of controlled rheology polypropylene (CR-PP).

2,5-Dimethyl-2,5-di(tert-butylperoxy)hexane is also known as di-tert-butyl 1,1,4,4-tetramethyltetramethylene diperoxide, 2,5-Dimethyl-2,5-bis(tert-butylhydroperoxy)hexane and Di-tert-butyl 1,1,4,4-tetramethyltetramethylene diperoxide.

Product information

CAS number78-63-7
EC number 201-128-1
HS code2909 60 00

Molecular and structural information

Molecular formulaC16H34O4
Molecular weight290.44 g/mol
Smiles notationCC(C)(C)OOC(C)(C)CCC(C)(C)OOC(C)(C)C
Structural formula:78-63-7


Appearanceyellowish transparent liquid
Assay≥94.00 %
Refractivity1.420 - 1.425
Density0.870 - 0.875
TBA≤0.50 %
DTBP≤0.50 %
Cyclig (TMDOCH)≤5.00 %
DHBBP/mono≤1.00 %

Physicochemical information

Boiling point306.50 °C ± 25 °C @ 760Torr.
Density0.872 g/cm3 @ 20 °C
Flash point68 ºC
Partition coefficient (log Pow)7.34
Melting point8 °C @ 1 atm
Solubility in waterInsoluble (< 0.1 mg/l)
Vapour pressure0.185 Pa @ 25°C
Viscosity7.35 mPa.s @ 12 rpm (20°C)

Available packaging: 25KG PE drum.
Special packaging is available on request

Shipment Info
Europe and United States: Provided Enox 101 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 2,5-Dimethyl-2,5-di-tert-butylperoxy-hexane in a cool, dry and well-ventilated area and in line with legal requirements.
Keep Enox 101 away from heat sources and oxidizing agents.

This substance (CAS: 78-63-7) has been registered (FULL) under REACH (EC) 1907/2006.

A Material Safety Data Sheets (MSDS) is available for Iniper 101 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.

2-5-Dimethyl-2-5-di-tert-butylperoxy-hexane: Disclaimer. This information is supplied solely for informational purposes and Vesta Chemicals 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.