Di-tert-butyl peroxide (DTBP) 110-05-4

Di-tert-butyl Peroxide
Trade Name: Initiator DTBP
English Name: Di-tert-butyl Peroxide
Chemical Name: Di-tert-butyl Peroxide
Structural Formula:
Molecular Formula: C8H17O2
Molecular Weight: 146.2
Theoretical Active Oxygen Content: 10.94%
CAS Number: 110-05-4
UN No. 3107
EINECS: 203-733-6
IMO/IMDG 5227 Class: 5.2
Road Transport (ARD): 5.2
Type E liquid organic peroxide.
Properties: This product is a pale yellow, transparent liquid that can be diluted with a solvent specified by the customer. Insoluble in water; soluble in most organic solvents. Flash point: 12.50C (closed cup), 180C (open cup); boiling point:
1090C; freezing point: -400C. Viscosity (20℃): 0.9 mPa·s.
Major decomposition products: tert-butanol, isoprene, methane, ethane, acetone, etc.
Safety parameters:
Half-life:
0.1 hour: 164°C
1 hour: 141°C
10 hours: 121°C
Thermal Stability Data:
Self-Accelerating Decomposition Temperature (SADT): 80°C
Critical Temperature (Tem): 75°C
Storage Temperature (Tsmax): -30/40°C
Activation Energy E (kJ/mol): 130.74
Technical Specifications:
Appearance: Pale yellow transparent liquid
Purity: 99% min
TBHP: 0.1% max
Specific gravity (25 °C): 0.793–0.803
Refractive index: 1.385–1.391
Applications:
1. Used as a polymerization initiator for vinyl and diene monomers; the recommended crosslinking temperature range is 180–240 °C. It is a commonly used
initiator in tubular and batch-type high-pressure polyethylene polymerization processes, with a crosslinking temperature range of 240–280 °C.
2. Serves as a high-temperature curing agent for unsaturated polyesters.
3. Acts as a sulfur vulcanizing agent for diene rubbers and is suitable for the vulcanization of thick rubber products. It offers excellent tensile strength, elongation, compression resistance, and resistance to permanent deformation. Approved by the FDA, it is suitable for the vulcanization of the vast majority of
rubber, polyurethane elastomers, and silicone rubber, enabling the production of rubber products in white and a variety of vivid colors.
4. Used in the high-speed polypropylene (polypropylene fiber) spinning industry as a molecular weight regulator (used in the production of cooling masterbatches). It features a narrow molecular weight distribution, high melt index, and uniform spinning characteristics.
It is an excellent degrading agent used in polypropylene modification; adding this product to polypropylene enables the production of rheology-controlled polypropylene, improves flowability, facilitates rapid molding of polypropylene, and simultaneously reduces
deformation caused by molding. The modified polypropylene can be used to produce film-grade material.
5. Used as a pour point depressant in lubricant additives and transformer oil.
Packaging and Transportation:
Our factory’s standard packaging is 20-kilogram polyethylene bags. We can also supply packaging sizes according to customer requirements; customers may specify these when placing an order.
Storage Precautions:
1. Store in a cool, well-ventilated area at a temperature not exceeding 30°C.
2. Keep away from sources of ignition and heat. Store separately from acids, reducing agents, flammable and combustible materials, and other reducing agents.
3. Lighting and ventilation facilities in the storage area must be explosion-proof, with switches located outdoors.
4. Handle with care during transport to prevent damage to packaging and containers. Avoid impact and vibration. Wear appropriate personal protective equipment during repackaging and handling operations.
5. Customers are requested to carefully read our factory’s “Material Safety Data Sheet (MSDS)” when storing, transporting, and using this product.
Product Shelf Life:
When stored and transported in strict accordance with the manufacturer’s instructions, product quality is guaranteed for three months.
Fire Protection:
1. This product may decompose violently when exposed to heat, causing a fierce fire. Small fires involving a small amount of the product should be extinguished immediately using a foam or dry powder fire extinguisher.
2. In the event of a large fire, evacuate immediately to a safe distance and use a water hose to extinguish the flames; notify the fire department for further handling.