Dicumyl peroxide
Dicumyl peroxide (CAS: 80-43-3), with the molecular formula [C6H5C(CH3)2]2O2 and a molecular weight of 270.37 g/mol, is a widely used organic peroxide. It functions primarily as a high-temperature free-radical initiator in polymerisation processes. Its utility extends to cross-linking polymers like polyethylene and EPDM rubber, enhancing their thermal and mechanical properties for demanding applications.
- IUPAC
- Bis(1-methyl-1-phenylethyl) peroxide,Bis(α,α-dimethylbenzyl) peroxide
- Synonyms
- Bis(1-methyl-1-phenylethyl) peroxideBis(α,α-dimethylbenzyl) peroxide
![Dicumyl peroxide ([C6H5C(CH3)2]2O2) — chemical structure, CAS 80-43-3; Chemistry, fine chemical supplied by Tech Serve Solutions](/_next/image?url=https%3A%2F%2Fpub-f4d920c906024441a773a96f7098e551.r2.dev%2Fimages%2Fproducts%2F80-43-3.png&w=3840&q=75)
Polymerisation Initiator
Dicumyl peroxide is a key free-radical initiator, particularly effective at elevated temperatures. It is used to initiate the polymerisation of various monomers and to modify existing polymer chains.
Cross-linking Agent
This organic peroxide serves as a cross-linking agent for elastomers and polyolefins. It forms stable cross-links, improving the heat resistance, tensile strength, and elasticity of materials such as EPDM and polyethylene.
Modifier for Plastics
It is employed in the modification of plastics to enhance their performance characteristics. Dicumyl peroxide can improve the melt strength and processing stability of polymers.
| Molecular weight | 270.37 |
|---|---|
| Linear formula | [C6H5C(CH3)2]2O2 |
| Assay | 98% |
| Density | 1.56 g/mL at 25 °C(lit.) |
| Vapour pressure | 15.4 mmHg (38 °C) |
| Vapour density | 9.3 (vs air) |
| Storage temperature | 2-8°C |
| Melting point | 39-41 °C(lit.) |
Hazard statements
- H242Heating may cause a fire
- H315Causes skin irritation
- H319Causes serious eye irritation
- H411Toxic to aquatic life with long-lasting effects
Precautionary statements
- P220Keep away from clothing and combustible materials
- P273Avoid release to the environment
- P280Wear protective gloves, clothing and eye/face protection
- P305IF IN EYES
- P410Protect from sunlight
- P411Store at controlled temperature
| Protective equipment | dust mask type N95 (US), Eyeshields, full-face particle respirator type N100 (US), Gloves, respirator cartridge type N100 (US), type P1 (EN143) respirator filter, type P3 (EN 143) respirator cartridges |
|---|---|
| Transport (UN / ADR) | UN 3110A1 5.2 |
| Water hazard class (WGK, DE) | 2 |
| Hazard codes (EU) | O,Xi,N |
| Risk statements (R) | 7-36/38-51/53 |
| Safety statements (S) | 3/7-14-36/37/39-61 |
Hazard information is provided for guidance. Always consult the product Safety Data Sheet (SDS), available on request, before handling.
Documentation
Every batch ships with a Certificate of Analysis covering assay, identity and purity; the grade is confirmed against your enquiry. Safety Data Sheets and technical data sheets are available on request.
Supply & logistics
Samples for technical evaluation; bulk MOQ by grade and packaging. In-stock material ships in 7–10 working days, worldwide, with full export documentation.
What is Dicumyl peroxide used for?
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Dicumyl peroxide is primarily used as a free-radical initiator for polymerisation and as a cross-linking agent for polymers like polyethylene and EPDM rubber, enhancing their thermal and mechanical properties.
What is the CAS number and formula for Dicumyl peroxide?
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The CAS number for Dicumyl peroxide is 80-43-3, and its molecular formula is [C6H5C(CH3)2]2O2.
What grade and purity does Tech Serve Solutions supply?
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Tech Serve Solutions supplies Dicumyl peroxide with an assay of 98%. This product is not represented as USP, BP, or EP grade.
How should Dicumyl peroxide be handled safely?
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Dicumyl peroxide is an oxidising agent and can cause fire. It is also a skin and eye irritant and harmful to aquatic life. Handle with appropriate personal protective equipment, including a dust mask, eyeshields, gloves, and suitable respirator cartridges, in a well-ventilated area, and store at 2-8°C, away from incompatible materials.
How is Dicumyl peroxide packed, shipped, and exported?
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Tech Serve Solutions professionally packs, ships, and exports Dicumyl peroxide globally, adhering to all relevant transport regulations for hazardous materials. Please contact us for specific shipping details.
How can I request a quote or sample of Dicumyl peroxide?
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To request a quote or a sample of Dicumyl peroxide, please contact our sales team through the TSS website or call us directly.
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