Description and features

Enox BPO 75W (Dibenzoyl Peroxide 75%) is a white particle moistened with 25% water. This diacyl peroxide has C14H10O4 as chemical formula and it is used as initiator for the (co)polymerization of styrene, acrylonitrile, acrylates, methyacrylates and vinylacetate. Further it is being used to cure unsaturated polyester, vinyl esther and acrylic thermosetting resins at ambient temperatures.

Dibenzoyl peroxide also so known as benzoyl peroxide, BPO and benzoperoxide.


Europe: Enox BPO 75W is ➔ on stock in our local warehouses. Our lead ime 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 substance (CAS: 94-36-0) has been registered (FULL) under REACH (EC) 1907/2006.

Product Identification

CAS number94-36-0
EC number202-327-6
HS code2916 32 00

Half-life data

Activation energy 30.1 kcal/mole
10 hr. half-life temp 73 °C
1 hr. half-life temp 92 °C
1 min. half-life temp 131 °C


AppearanceWhite particle
Assay72.0-76.0 %
Active oxygen4.75-5.02
Cl≤0.20 %
Free acid (as C6H6COOH) ≤0.30 %
(In)organic hydrolysable Cl ≤0.25 %
Water≥ 23.0%


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


Store Dibenzoyl Peroxide in a cool, dry and well-ventilated area and in line with legal requirements.
Keep Enox BPO 75W away from heat sources and oxidizing agents.


A Material Safety Data Sheets (MSDS) is available for Enox BPO 75W 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 C14H10O4
Molecular weight 242.23 g/mol
Smiles notation O=C(OOC(=O)c1ccccc1)c2ccccc2
Structural formula:

Physicochemical information

Flash point Not applicable
Flammability Highly flammable
Melting point 103 – 105 20 °C @ 1.013 hPa
Partition coefficient (log Pow) 3.43 @ 20 °C
Relative density 1.33 @ 25 °C
Solubility in water Slightly soluble (9 .1 mg/l) @ 25 °C
Vapour pressure < 1mm Hg @ 20 °C