LQ-TAPB Tert-amyl peroxy benzoate 4511-39-1

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.

Address

Lanzhou City, Gansu Province, China

Call Us

+86 13775225407

Email Us

info@lzaux.com

en_USEnglish