Di-tert-Butyl Peroxide
DTBP, Tert-Butyl Peroxide.
- CAS
- 110-05-4
- EC
- 203-733-6
- Sectors
- Plastics & Polymers, Rubber & Elastomers, Oil, Gas & Energy
Di-tert-Butyl Peroxide (CAS 110-05-4) is a highly stable organic peroxide supplied as a clear, colorless liquid that acts as a free-radical source for high-temperature processes, serving as a polymerization initiator for ethylene and styrene, a cross-linking agent for silicone and EPDM rubbers, and a cetane improver in diesel fuels. In the plastics industry, it is a primary Technical Grade initiator for the polymerization of ethylene and styrene. It ensures controlled reaction rates and the production of polymers with consistent molecular weight and properties. In the oil and gas sector, DTBP is utilized as a cetane improver for diesel fuels and as a cross-linking agent in rubber manufacturing. Its high decomposition temperature makes it suitable for processes requiring thermal stability until activation.
Typical Properties
| Molecular formula | C8H18O2 |
|---|---|
| Molecular weight | 146.23 g/mol |
| Appearance | colourless liquid |
| Form | Liquid |
| Color | Clear |
| Odor | distinctive odor |
| Melting point | -40 °C |
| Boiling point | 111 °C |
| Density | 0.7910 g/cm³ @ Temp: 25 °C |
| Water solubility | immiscible |
| Flash point | 34 °F |
| GHS signal word | Danger · Flammable, Irritant / harmful, Health hazard |
| HS code | 29096000 |
| Grades available | Technical Grade |
Typical literature values for identification; lot-specific results are stated on the certificate of analysis (COA) and the safety data sheet (SDS) that accompany every delivery.
Di-tert-Butyl Peroxide
Applications
• Polymerization Initiator: Essential for the manufacture of LDPE and other high-volume thermoplastic resins.
• Rubber Cross-linking: Used to improve the mechanical strength and heat resistance of silicone and EPDM rubbers.
• Fuel Additive: Enhances the ignition quality of diesel fuels by increasing the cetane number in specialty blends
Safety & Risks
Classified as an Organic Peroxide (Type E) and Flammable Liquid. It is an Oxidizer and can explode under confinement. Mandatory use of Blast Shielding, Non-Sparking Tools, and PPE.
Packaging
20 kg UN-approved Plastic Drums, 160 kg Steel Drums, and Isotanks for bulk transport.