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

ItemContent
Product NameInitiator LQ-TAPB
Chemical NameTert-amyl peroxy benzoate
Molecular FormulaC₁₂H₁₆O₃
Molecular Weight208.30
Theoretical Active Oxygen Content7.68%
CAS No.4511-39-1
UN No.3103
Class5.2, Type C Organic Peroxide Liquid

Properties

PropertyDescription
AppearancePale yellow transparent liquid
Boiling Point124°C (760mmHg)
Decomposition Temperature76-77°C
SolubilityInsoluble 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-LifeTemperature
0.1 hour139°C
1 hour118°C
10 hours99°C

Thermal Stability Data

Thermal Stability ParameterTemperature
Self-accelerating Decomposition Temperature (SADT)60°C
Critical Temperature (Tem)--
Storage Temperature (Tsmax)--/20°C

Usage

ApplicationDetails
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 PolymerizationCommon initiator for styrene and its copolymers when combined with BPO (Benzoyl Peroxide).
Acrylate PolymerizationUsed to replace azo-based initiators, reducing toxicity in the resin. Can also be used for vinyl acetate polymerization.
Curing Unsaturated Polyester ResinsPreferred curing agent for high-temperature curing of unsaturated polyester resins, especially in SMC, BMC, and DMC molding.
Rubber VulcanizationEffective vulcanizing agent for most types of rubber (excluding isobutylene rubber).
Fuel AdditiveIncreases the cetane number of diesel fuels.

Packaging and Transportation

ItemDetails
Standard Packaging25 kg polyethylene containers. Custom packaging available upon request.

Storage Instructions

PrecautionDescription
Storage ConditionsStore 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 StabilityFollow manufacturer guidelines for storage. Quality guaranteed for six months under proper conditions.
Handling PrecautionsHandle carefully to avoid damage to packaging. Follow personal protection measures as outlined in the MSDS.

Fire Protection

Fire ProtectionDescription
Small Fire HandlingUse foam or dry powder extinguishers for small fires, followed by water to prevent re-ignition.
Large Fire HandlingFor 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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