• Perodox® D - 2,2-Di(tert-butylperoxy) butane

    CAS: 2167-23-9

    A high-purity organic peroxide used as a free radical initiator in polymerization and crosslinking applications

  • Product Overview

    Perodox® D,2,2-Di(tert-butylperoxy)butane is an organic peroxide compound with the molecular formula C₁₂H₂₆O₄ and a molecular weight of 234.33 g/mol. It is typically handled as a solution in mineral oil or other suitable solvents for safety reasons, with common commercial grades available as 50% solutions.

    This compound belongs to the class of organic peroxides, which are characterized by the presence of an oxygen-oxygen single bond (peroxy functional group). Organic peroxides like 2,2-Di(tert-butylperoxy)butane are widely employed as initiators for free radical polymerization and as crosslinking agents for polymers and elastomers.

    The compound appears as a clear, colorless to pale yellow liquid with a characteristic odor. It has a density of 0.88 g/mL at 25°C and is immiscible with water. Its boiling point is approximately 296.66°C, and it has a flash point of 118°F (47.78°C).

    CAS Number: 2167-23-9

    Molecular Formula: C₁₂H₂₆O₄

    Molecular Weight: 234.33 g/mol

    EINECS Number: 218-507-2

    Common Synonyms: Perodox D, Trigonox D,Lupersol 220,Perhexa 22,Chaloxyd P 1200AL

  • Applications

    2,2-Di(tert-butylperoxy)butane serves as a efficient free-radical initiator in various industrial processes, particularly in polymer chemistry. Its decomposition characteristics make it suitable for applications requiring specific temperature ranges and reaction kinetics

    Polymerization Initiator

    This compound is extensively used as a free radical initiator for the polymerization of monomers such as ethylene, styrene, vinyl chloride, and acrylates. The decomposition temperature and half-life of 2,2-Di(tert-butylperoxy)butane make it suitable for both high-pressure and solution polymerization processes

    Crosslinking Agent for Polymers and Elastomers

    In the rubber and plastics industry, 2,2-Di(tert-butylperoxy)butane is employed to crosslink polyethylene, ethylene-propylene-diene monomer (EPDM), silicone rubber, and other elastomers. Crosslinking enhances the thermal stability, chemical resistance, and mechanical properties of these materials

    Curing Agent for Thermoset Resins

    The compound is used in the curing of unsaturated polyester resins and vinyl ester resins, which are widely used in fiber-reinforced plastics, coatings, and composite materials

    Organic Synthesis

    2,2-Di(tert-butylperoxy)butane serves as a radical source in various organic transformations, including radical addition reactions and oxidations

  • Product Technical Specifications

    Comprehensive technical specifications and performance characteristics of Perodox® D

    Property

    Assay (as 100% active): ≥ 95.0%

    Appearance: Clear, colorless to pale yellow liquid

    Active oxygen content: ≈ 6.83%

    Density at 25°C: 0.88 g/mL

    Refractive index (n20/D): 1.445

    Flash point: 118°F (48°C)

    Water solubility: Immiscible

    Vapor pressure at 25°C: 50 Pa

    SADT (Self-accelerating decomposition temperature): ≥ 80°C UN Recommendations

  • Safety & Storage

    Proper handling and storage procedures for Perodox® D

    2,2-Di(tert-butylperoxy)butane is classified as an organic peroxide and possesses significant hazards.

    It may cause fire or explosion if mishandled, is harmful if swallowed, and causes serious eye irritation

    Hazard Identification

    Oxidizing (O) - May cause or intensify fire; oxidizer

    Irritant (Xi) - Causes skin and eye irritation

    Specific target organ toxicity (single exposure)

    Risk Phrases

    R8 - Contact with combustible material may cause fire

    R41 - Risk of serious damage to eyes

    R7 - May cause fire

    R36/38 - Irritating to eyes and skin

    R10 - Flammable

    R37/38 - Irritating to respiratory system and skin

    R65 - Harmful: May cause lung damage if swallowed

    Safe Handling Procedures

    When handling 2,2-Di(tert-butylperoxy)butane, implement the following safety measures

    Personal Protective Equipment (PPE): Wear suitable protective clothing, gloves, and eye/face protection. Use chemical safety goggles and face shield if splash risk exists. Impermeable gloves and protective clothing are recommended.

    Engineering Controls: Use only in well-ventilated areas, preferably with local exhaust ventilation. Avoid all sources of ignition (heat, sparks, open flames).

    Handling Precautions: Do not grind or subject to friction or impact. Avoid contact with incompatible materials. Keep away from heat, sparks, and open flames.

    Storage Conditions

    Proper storage is critical for maintaining stability and ensuring safety:

    Temperature: Store in a refrigerator at approximately 4°C in a dedicated flammables area

    Container: Keep in original container, tightly closed

    Segregation: Store away from incompatible materials (acids, bases, strong oxidizing agents, powdered metals, strong reducing agents)

    Ventilation: Ensure adequate ventilation in storage area

    Light: Protect from direct sunlight

    Incompatible Materials

    2,2-Di(tert-butylperoxy)butane is incompatible with:

    Acids and bases (may catalyze decomposition)

    Strong oxidizing agents

    Strong reducing agents (may cause violent reaction)

    Powdered metals (may catalyze decomposition)

    Combustible materials

    Transport Information

    UN Number: UN 3103

    Hazard Class: 5.2 (Organic peroxide)

    Packing Group: II

    Transport Emergency Card: According to ADR/RID/ADNR/IMDG/IATA/ICAO

  • Frequently Asked Questions

    Common questions about Perodox® D and its applications

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