Benzoyl Peroxide (BPO) – ST-BPO

 

Product Overview

Benzoyl Peroxide (BPO, CAS No. 94-36-0) is an organic peroxide widely used as a free-radical polymerization initiator. In EPS suspension polymerization, BPO is commonly used as a primary initiator to support controlled polymerization and uniform bead formation.

Benzoyl Peroxide Technical Specifications

Chemical Name: Benzoyl Peroxide
Abbreviation: BPO
Commercial Name: ST-BPO
CAS Number: 94-36-0

PropertySpecification
Chemical NameBenzoyl Peroxide
AbbreviationBPO
CAS Number94-36-0
AppearanceWhite Crystalline Granule
Active Content (Dry) 98.2%
Assay (with Moisture)75% 
Moisture Content24% pm 
Total Chlorine0.25%

BPO as an EPS Polymerization Initiator

BPO is used as a primary initiator in EPS suspension polymerization. It is often combined with a higher-temperature initiator such as TBPB to provide staged radical generation during the polymerization cycle.

Applications of Benzoyl Peroxide

EPS suspension polymerization

Acrylic resin polymerization and curing

Polyester resin applications

Other free-radical polymerization systems

Core Advantages of ST-BPO

High Active Content: Provides consistent initiator performance.

Controlled Radical Generation: Suitable for the initial stage of EPS polymerization.

Low Impurity Profile: Helps maintain stable performance in polymerization systems.

Complementary Use with TBPB: Can be used together with TBPB in staged initiation systems.

Packaging & Storage

Packaging: 16.5 kg carton lined with a PE plastic bag.

Storage Conditions: Store in a cool, dry, and well-ventilated area, away from heat, direct sunlight, and incompatible materials.

Safety & Handling: ST-BPO is supplied with approximately 24% moisture content to improve handling and transport stability.

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