• Perodox® 121 - tert-Amyl peroxy-2-ethylhexanoate

    CAS: 686-31-7

    A free radical initiator in polymerization processes.

  • Product Overview

    Perodox® 121, tert-Amyl peroxy-2-ethylhexanoate (CAS 686-31-7) is an organic peroxide compound widely used as a free radical initiator in polymerization processes. It appears as a colorless to pale yellow liquid with limited water solubility but good solubility in common organic solvents. This compound is known for its effectiveness as a high-temperature curing agent and polymerization initiator, particularly in the production of various polymers and resins.

    This compound is thermally sensitive and may decompose violently when exposed to heat, shock, or friction. Proper handling and storage procedures must be strictly followed to ensure safety. It is commercially available in various purity grades and is typically packaged in temperature-controlled containers to maintain stability during transport and storage.

    CAS Number: 686-31-7

    TSCA Status:Listed on inventory

    EINECS/ELINCS No.:211-687-3

    Molecular Weight: 230.34 g/mol

    Molecular Formula: C13H26O3

  • Applications

    tert-Amyl peroxy-2-ethylhexanoate serves as a crucial component in various industrial processes, primarily functioning as a free radical initiator. Its thermal decomposition properties make it particularly valuable in polymerization reactions and resin curing applications.

    Polymerization Initiator

    Widely used as an initiator for the polymerization of vinyl monomers, including acrylates, methacrylates, styrene, and acrylonitrile. It facilitates the production of various polymers with controlled molecular weights and properties.

    High-Temperature Curing Agent

    Functions as an effective high-temperature curing agent for unsaturated polyester resins and vinyl ester resins, with an optimal curing temperature range of 120-160°C. This application is particularly valuable in hot-press molding techniques.

    Production of EVA Copolymers

    Plays a significant role in the production of ethylene-vinyl acetate (EVA) copolymers, contributing to the manufacturing of materials with specific elasticity and durability characteristics.

    Thermoset Plastics and Elastomers

    Utilized in the production of thermoset plastics and elastomers, where it initiates cross-linking reactions that result in materials with enhanced thermal stability and mechanical properties.

    Composite Materials

    Essential in the manufacturing of composite materials, where it promotes the curing process that binds reinforcing fibers with polymer matrices, creating strong, lightweight materials for various applications.

    Coatings and Adhesives

    Used in formulations for specialty coatings and adhesives, where it initiates polymerization reactions that result in durable, protective surfaces and strong bonding capabilities.

  • Technical Data

    Comprehensive technical specifications and performance characteristics of Perodox® 121

    Physical and Chemical Properties

    Molecular Weight:230.34 g/mol

    Density:0.9075 g/cm³

    Refractive Index:1.432

    Boiling Point:68°C

    Melting Point:-62°C

    Vapor Pressure:0.00442 mmHg

    Water Solubility:17.6 mg/L

    Flash Point:112.8°C

    LogP:3.87

    Half-Life Data

    Half-Life Period Temperature

    0.1 hour:111°C

    1 hour:91°C

    10 hours:73°C

    Safety Data

    GHS Signal Word:Danger

    Hazard Statements:H242: Heating may cause a fire

    Precautionary Statements:P210, P220, P234, P261, P272, P280

    Storage Temperature:Below 10°C (50°F)

    Transport Classification:UN 3115, Hazard Class 5.2, Packing Group II

  • Frequently Asked Questions

    Comprehensive FAQ section addressing common inquiries about tert-Amyl peroxy-2-ethylhexanoate (CAS 686-31-7).

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