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Description and features

Enox DCBP (Bis-2-4-Dichloro Benzoyl-Peroxide) is a white homogeneous paste in 50% silicone oil. This diacyl peroxide has C14H6Cl4O4 as chemical formula and is  mainly used for low temperature crosslinking of silicone rubbers .The compounds can be cured without external pressure (hot air and/or IR crosslinking).

Bis (2,4-Dichloro Benzoyl) Peroxide is also known as 2,4-Dichlorobenzoylperoxide and peroxide, bis(2,4-dichlorobenzoyl).


Europe: Enox DCBP is ➔ on stock in our local warehouses. Our lead time is about one week if delivered in 20 KG PE drums.

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

This product (CAS: 133-14-2) has been registered (FULL) under REACH (EC) 1907/2006.

Product Identification

CAS number 133-14-2
EC number 205-094-9
HS code 2916 39 00
EC name Bis(2,4-dichlorobenzoyl) peroxide
IUPAC name bis(2,4-dichlorophenyl)peroxyanhydride

Half-life data

Activation energy28.1 kcal/mole
10 hr. half-life temp 37 °C
1 hr. half-life temp 55 °C
1 min. half-life temp 112 °C


Appearance White to yellowish paste
Assay49.0 – 52.0 %
Active oxygen2.06 – 2.1 %
Free chlorine≤0.05 %
Acidity as 2,4 dichlorobenzoic acid ≤0.5 %
Volatile matter ≤1.5 %


Available packaging: 20 KG PE drums.
Special packaging is available on request


Store Bis-2-4-Dichloro Benzoyl-Peroxide in a cool, dry and well-ventilated area and in line with legal requirements.
Keep Enox DCBP away from heat sources and oxidizing agents.


A Material Safety Data Sheets (MSDS) is available for Enox DCBP 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.

Molecular and structural information

Molecular formula C14H6Cl4O4
Molecular weight 380.10 g/mol
Smiles notation c1(c(cc(Cl)cc1)Cl)C(OOC(c1c(cc(Cl)cc1)Cl)=O)=O
Structural formula 133-14-2

Physicochemical information

Flash point Not applicable
Log/Pow No data available
Relative density 1.25 @ 25 °C
SADT 60 °C
Solubility in water Insoluble (<0.1 mg/l) @20°C
Vapour pressure Not applicable
Viscosity Thixotropic