Tert-butyl peroxybenzoate

Product Introduction: Tert-butyl peroxybenzoate

Trade Name: Initiator LQ-TBPB

English Name: Tert-butyl peroxybenzoate  

Chemical Name: Tert-butyl peroxybenzoate

Molecular Structure:

Molecular Formula: C₁₁H₁₄O₃

Molecular Weight: 194.2

Theoretical Active Oxygen Content: 8.24%

CAS No.: 614-45-9

UN  No.  3103   

Type C liquid organic peroxide, Class II dangerous goods packaging.

Properties: This product is a pale yellow transparent liquid with a boiling point of 124°C (760 mmHg) and a decomposition temperature of 76-77°C. It can be diluted with solvents specified by the customer. Insoluble in water, soluble in most organic solvents.

Specific gravity (25°C) 1.036-1.045, refractive index (25°C) 1.495-1.500.

Main Decomposition Products: tert-Butanol, benzoic acid, methane, acetone, ethane, benzene, etc.

Safety Indicators:

0.1 hour: 142°C

1 hour: 122°C

10 hours: 103°C

Thermal stability data:

Self-Accelerating Decomposition Temperature (SADT): 65°C

Critical Temperature (Tem): 55°C

Control Temperature (Tc): --

Storage Temperature (Tsmax): -15/25 °C

Activation Energy E (KJ/mol): 151.59

Technical Specifications:

Appearance: Pale yellow transparent liquid

Content: 98%  min                       

Active Oxygen: 8.07%  min  

TBHP: 1000mg/kg

Inorganic and organic hydrolyzable chlorides: 50mg/kg          

Applications:

1. An excellent medium-temperature initiator for low-density polyethylene (LDPE), commonly used in tubular or autoclave processes. It can be combined with initiator PV (tert-butyl peroxypivalate), OT (tert-butyl peroxy-2-ethylhexanoate), initiator TBPD (tert-butyl peroxyneodecanoate), and diisopropylbenzene hydroperoxide to form a composite catalyst system for improved polymerization results.

2. In styrene suspension polymerization processes, the combined use of Initiator C and benzoyl peroxide (BPO) is the most common initiator system for styrene or styrene copolymers.

3. In acrylate polymerization processes, Initiator C replaces azo initiators, reducing toxicity in the resin. It can also be used in the polymerization of vinyl acetate.
4. It is a high-temperature curing agent for unsaturated polyester resins. This product is widely used in the curing of unsaturated polyesters in fiberglass-reinforced plastics, coatings, adhesives, etc., such as in the molding processes of SMC, BMC, and DMC. It is the preferred curing agent for high-temperature curing of unsaturated polyesters, providing excellent curing results for both compression molding and pultrusion. When combined with initiators such as BPO, TBPEH, and CH to form a composite initiator system, even better results are achieved.

5. It is a good vulcanizing agent for most rubbers (except isobutylene-based rubbers).
6.  Adding it to fuel oil significantly increases its cetane number.

Packaging and Transportation:

Our standard packaging is 25 kg polyethylene packaging. Packaging sizes can also be supplied according to customer requirements; customers may specify their needs when placing an order.

Storage Precautions:

1. Store in a cool, well-ventilated area with a warehouse temperature not exceeding 30°C.
2. Keep away from ignition sources and heat. Store separately from acids, reducing agents, flammable materials, combustible materials, and reducing agents.
3. Lighting and ventilation facilities in the storage area should be explosion-proof, with switches located outdoors.
4. Handle with care during transportation to prevent damage to packaging and containers. Avoid impact and vibration. Personal protective equipment should be worn during repackaging and handling operations.
5. Customers are advised to carefully read our Material Safety Data Sheet (MSDS) before storing, transporting, and using this product.

Product Shelf Life:

When stored and transported in strict accordance with the conditions specified by the manufacturer, product quality is guaranteed for six months.

Fire Protection:

1. This product may decompose violently when heated and can catch fire fiercely. For small fires involving a small quantity of the product, extinguish promptly with foam or dry powder fire extinguishers.

2. For large fires, quickly retreat to a safe distance and extinguish with water jets. Notify the fire department for handling.