| Item | Content |
|---|---|
| Product Name | Initiator LQ-TAPB |
| Chemical Name | Tert-amyl peroxy benzoate |
| Molecular Formula | C₁₂H₁₆O₃ |
| Molecular Weight | 208.30 |
| Theoretical Active Oxygen Content | 7.68% |
| CAS No. | 4511-39-1 |
| UN No. | 3103 |
| Class | 5.2, Type C Organic Peroxide Liquid |
Properties
| Property | Description |
|---|---|
| Appearance | Pale yellow transparent liquid |
| Boiling Point | 124°C (760mmHg) |
| Decomposition Temperature | 76-77°C |
| Solubility | Insoluble in water, soluble in most organic solvents |
| Specific Gravity (25°C) | 1.036-1.045 |
| Refractive Index (25°C) | 1.495-1.500 |
Major Decomposition Products
| Decomposition Product |
|---|
| Tert-butyl alcohol |
| Benzoic acid |
| Methane |
| Acetone |
| Ethane |
| Benzene |
Safety Indicators
| Half-Life | Temperature |
|---|---|
| 0.1 hour | 139°C |
| 1 hour | 118°C |
| 10 hours | 99°C |
Thermal Stability Data
| Thermal Stability Parameter | Temperature |
|---|---|
| Self-accelerating Decomposition Temperature (SADT) | 60°C |
| Critical Temperature (Tem) | -- |
| Storage Temperature (Tsmax) | --/20°C |
Usage
| Application | Details |
|---|---|
| Polyethylene Polymerization (LDPE) | Excellent medium-temperature initiator for high-pressure polyethylene polymerization. Often used in tubular or autoclave methods. Can be combined with other initiators for improved polymerization effects. |
| Styrene Suspension Polymerization | Common initiator for styrene and its copolymers when combined with BPO (Benzoyl Peroxide). |
| Acrylate Polymerization | Used to replace azo-based initiators, reducing toxicity in the resin. Can also be used for vinyl acetate polymerization. |
| Curing Unsaturated Polyester Resins | Preferred curing agent for high-temperature curing of unsaturated polyester resins, especially in SMC, BMC, and DMC molding. |
| Rubber Vulcanization | Effective vulcanizing agent for most types of rubber (excluding isobutylene rubber). |
| Fuel Additive | Increases the cetane number of diesel fuels. |
Packaging and Transportation
| Item | Details |
|---|---|
| Standard Packaging | 25 kg polyethylene containers. Custom packaging available upon request. |
Storage Instructions
| Precaution | Description |
|---|---|
| Storage Conditions | Store in a cool, well-ventilated area. Maximum storage temperature: 30°C. Keep away from heat sources, flames, and incompatible materials such as acids, reducing agents, and flammable substances. |
| Storage Stability | Follow manufacturer guidelines for storage. Quality guaranteed for six months under proper conditions. |
| Handling Precautions | Handle carefully to avoid damage to packaging. Follow personal protection measures as outlined in the MSDS. |
Fire Protection
| Fire Protection | Description |
|---|---|
| Small Fire Handling | Use foam or dry powder extinguishers for small fires, followed by water to prevent re-ignition. |
| Large Fire Handling | For large fires, move to a safe distance and use large amounts of water to extinguish. Notify fire services for further action. |
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