- Product Name: DTBP (tert-Butyl Peroxide)
- CAS Number: 110-05-4
- Molar Mass: 146.2 g/mol
- Physical State: Liquid, technical grade
- Applications: Used as an initiator (radical source) for monomer polymerization, and for rheological control in cross-linked polyethylene and polypropylene.
- Appearance: Colorless liquid
- Purity: Greater than 99%
- Active oxygen content: Greater than 10.8%
- Density at 20°C: approximately 0.79 g/cm³
- Viscosity at 20°C: approximately 0.8 mPa·s
- Refractive index at 20°C: approximately 1.389
- Solubility: Insoluble in water; soluble in organic solvents
- Vapor pressure at different temperatures: 25/75/1000 mbar at 20/40/110°C, respectively
- Critical temperature (SADT): Above 80°C
- Refrigerated stability: The liquid remains stable below -25°C
- Recommended storage temperature: below 40°C
- Storage stability: Stable for 12 months from the date of delivery
- Polymer crosslinking:
- Used to cross-link polyethylene (HDPE and LDPE) at temperatures above 180°C.
- Effective and relatively free of charring.
- Usage: 0.5–2% by weight of the material to be cross-linked.
- Volatile, odorless decomposition products.
- No sulfur-like odor on the surface.
- Polypropylene rheology control:
- Used as a free-radical source to control the rheology of polypropylene.
- Temperature range: 200°C–220°C.
- Usage: 0.01%–0.1% by weight of the polymer.
- Makes polypropylene easier to reprocess by reducing the average molecular weight.
- DTBP is supplied in 20-kilogram (44.1-pound) polyethylene drums.
- This information is based on internal testing using local raw materials and is intended to provide an understanding of the product and its applications.
- No guarantee is made regarding specific product properties or suitability for specific applications.
- Applications and use based on the technical advice provided are the sole responsibility of the user.
- Users are encouraged to inspect and test received goods to verify their suitability for the intended application.