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Desciption and features
Enox 101-50D-pd (2-5-Dimethyl-2-5-di-tert-butylperoxy-hexane on silica, 50%) is a white powder which has C16H34O4 as chemical formula. It is used to for the crosslinking of natural rubber, synthetic rubber (such as silicone rubber)  and as modification agent of polypropylene degradation.

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:


AppearanceWhite powder
Assay49.00 - 51.00 %
Density0.30 - 0.50 g/cm3

Physicochemical information

Active oxygen content5.50 %
Boiling pointDecomposes below the boiling point.
Bulk density450 kg/m3 @ 20 °C
Flash pointNot applicable
Partition coefficient (log Pow)No data available
Melting pointDecomposes before melting.
Solubility in waterInsoluble (< 0.1 mg/l)
Vapour pressure2 kPa @ 25°C

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

Shipment Info
Europe and United States: Provided Enox 101-50D-pd  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 101-50D-pd away from heat sources and oxidizing agents.

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

A Material Safety Data Sheets (MSDS) is available for Enox 101-50D-pd  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 on silica: 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.