Chemical name: Tert butyl benzoate peroxide
Another name: Tert butyl peroxybenzoate, TBPB
CAS No.: 614-45-9
Molecular formula: C11H14O3
Molecular-weight: 194.2
Brief introduction:
TBPB is a low volatile, yellowish transparent liquid. It is an ester organic peroxide. It is used as a medium temperature initiator for polymerization reactions (such as polystyrene, polyethylene and poly-acrylic acid), a curing agent for unsaturated polyester and a curing agent for silicone rubber.
Main Application:
1. The excellent medium temperature initiator of high pressure polyethylene (LDPE) is mostly used in pipe or kettle process. It can be combined with initiator tert butyl peroxyvalerate, tert butyl peroxy2-ethylhexanoate, initiator tert butyl peroxyneodecanoate and diisopropylbenzene hydrogen peroxide to form a composite catalyst system, with better polymerization effect.
2. In the polystyrene suspension polymerization process, it is used in combination with benzoyl peroxide (BPO), which is the most commonly used initiator of polystyrene or polystyrene co-polymer.
3. In the polymerization process of acrylate, instead of azo initiator, the toxicity in the resin is reduced. It can also be used in the polymerization of vinyl acetate.
4. It is a high temperature curing agent for unsaturated polyester. This product is widely used in the curing process of unsaturated polyester such as FRP, coatings and adhesives, such as the molding process of SMC, BMC and DMC. This product is the preferred curing agent for the high-temperature curing of unsaturated polyester, and has a very ideal curing effect for molding and pultrusion molding. If it is combined with BPO, TBPEH, CH and other initiators, the effect is better
Main quality index
SN | item | Specification |
1 | Appearance | Light yellow transparent liquid |
2 | Assay(%) | Min. 98.0 |
3 | active Oxygen content(%) | Min. 8.07 |
4 | Content of TBHP (%) | Max. 0.10 |
5 | Inorganic and organic hydrolyzable chloride content（mg/kg ） | Max. 50 |
Chemical properties
SN | Item | Properties |
1 | State | Liquid |
2 | Density (g/cm3) | ~1.04 |
3 | Refractive index nD20 | ~1.499 |
4 | Boiling point (°C) | 124 |
5 | Freezing point (°C) | 8 |
6 | Theoretical active Oxygen content(%) | 8.24 |
Safety data
SN | Item | index |
1 | SADT(°C) | 65 |
2 | Alarm Temp(°C) | 55 |
3 | UN-No | 3103 |
4 | CN-No | 52076 |
Half life data
SN | Item | index |
1 | Activation Energy Ea(KJ/mole) | 151.59 |
2 | 10 hr.Half Life Temp | 103 |
3 | 1 hr.Half Life Temp | 122 |
4 | 1 min.Half Life Temp | 142 |
Solubility: soluble in most organic solvents, insoluble in water. It can be diluted with the solvent specified by the customer.
Packaging: 20kg, PE bucket packaging. It can also be supplied according to the packaging size required by customers, and customers can put forward requirements when ordering.
Storage:
1. Store in a cool and ventilated space, and the warehouse temperature shall not exceed 30 ℃.
2. Keep away from fire and heat. It shall be stored separately from acids, reducing agents, combustibles, combustible substance, etc.
3. The lighting and ventilation facilities in the storage room are explosion-proof, and the switch is set outdoors.
4. Handle with care during handling to prevent damage of packaging and containers. It is forbidden to impact and oscillate. Pay attention to personal protection during sub packaging and handling.
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