Perodox® 21 - Tert-Butyl peroxy-2-ethylhexanoate

Tert-Butyl peroxy-2-ethylhexanoate (C12H24O3) consists of a tert-butyl group attached to a peroxy-2-ethylhexanoate moiety. Its molecular structure features an alkyl chain that contributes to its solubility properties and decomposition characteristics

TBPEH offers a balanced decomposition profile with effective initiation in the 70-150°C range, making it suitable for various LDPE production processes. It has higher efficiency compared to some traditional initiators, with a 10-hour half-life temperature of 73°C

Key advantages include: high efficiency at moderate temperatures, good solubility in hydrocarbon monomers, minimal undesirable byproducts, and compatibility with various reactor configurations including both tubular and autoclave processes

TBPEH is compatible with: ethylene, styrene, acrylic esters, methacrylic esters, vinyl acetate, and various other vinyl monomers. It's particularly effective for high-pressure polymerization processes

TBPEH is primarily activated through thermal decomposition. The decomposition follows first-order kinetics, generating free radicals that initiate polymerization. The rate of decomposition can be controlled by temperature adjustment

Minimum required PPE includes: chemical safety goggles, nitrile or neoprene gloves, lab coat or protective clothing, and adequate ventilation. For large-scale handling, additional protection may include face shields and chemical-resistant aprons

Dispose according to local regulations: small quantities can be decomposed by gradual addition to alkaline solutions containing reducing agents. For larger quantities, consult with licensed hazardous waste disposal services

Typical dosage ranges from 0.01% to 0.5% based on monomer weight, depending on the desired molecular weight, production rate, reactor type, and specific process conditions

Standard Tert-Butyl peroxy-2-ethylhexanoate is not specifically approved for direct food contact applications. For food-grade polymers, consult the manufacturer for appropriate grades and certifications

When stored at recommended conditions (-30°C to 10°C), Perodox 21 maintains specifications for at least 3 months after delivery. Extended storage may require lower temperatures to preserve activity

Temperature significantly impacts TBPEH performance: decomposition rate approximately doubles with every 10°C temperature increase. Optimal initiation typically occurs in the 70-150°C range depending on the specific application

Temperature significantly impacts TBPEH performance: decomposition rate approximately doubles with every 10°C temperature increase. Optimal initiation typically occurs in the 70-150°C range depending on the specific application

Major decomposition products include: tert-butanol, 2-ethylhexanoic acid, carbon dioxide, and various hydrocarbon fragments depending on decomposition conditions

Classified as: Organic peroxide type D; liquid, temperature controlled, Division 5.2; UN 3113; PG II. Transport requires proper labeling, documentation, and compliance with international regulations

TBPEH has higher thermal stability than BPO and is effective at higher temperature ranges. While BPO is often used with accelerators at lower temperatures, TBPEH is suitable for high-temperature processes without additional accelerators

Typical dosage ranges from 0.5% to 3% based on resin weight, depending on desired gel time, curing temperature, resin type, and specific application requirements

TBPEH can be used for thick sections with proper formulation. For very thick sections, multiple-layer application or temperature-controlled curing may be required to prevent excessive exotherm and ensure complete cure

TBPEH has low water solubility (46.3 mg/L at 20°C) and is generally not highly moisture-sensitive. However, prolonged exposure to moisture should be avoided to maintain product quality and performance

TBPEH has low water solubility (46.3 mg/L at 20°C) and is generally not highly moisture-sensitive. However, prolonged exposure to moisture should be avoided to maintain product quality and performance

TBPEH is primarily a thermal initiator and typically does not require accelerators. For specific applications requiring lower temperature activation, it can be used with certain amine accelerators, though this is less common than with other peroxide types

TBPEH activates at moderate temperatures (70-150°C) and is suitable for high-pressure polymerization. AIBN requires similar temperature ranges but decomposes to different byproducts and may be preferred for specific applications requiring nitrogen-containing initiators

Storage precautions include: keep at recommended temperatures (-30°C to 10°C), avoid direct sunlight, maintain dry conditions, isolate from accelerators and reducing agents, and use appropriate hazard signage in storage areas