Perodox® 16 - Di(4-tert-butylcyclohexyl) Peroxydicarbonate

It is an organic peroxide used as a polymerization initiator, identified by CAS 15520-11-3.

The CAS number is 15520-11-3, a unique identifier for chemical substances.

It initiates the free-radical polymerization of vinyl chloride monomers under controlled conditions.

Store in a cool, dry place away from heat sources, and use personal protective equipment to avoid contact.

No, it is not recommended for food-contact applications due to potential residue concerns.

The molecular formula is C24H38O6.

Higher temperatures accelerate decomposition, which is why storage below 20°C is critical.

It is insoluble in water but soluble in common organic solvents like acetone.

The polymer, plastics, and resin manufacturing industries are the main users.

Absorb with inert material and dispose of as hazardous waste, following local regulations.

The IUPAC name is di(4-tert-butylcyclohexyl) peroxydicarbonate, which is the systematic chemical name for CAS 15520-11-3.

It offers lower decomposition temperatures compared to many dialkyl peroxides, making it suitable for temperature-sensitive polymerization processes.

When stored properly below 20°C, it typically has a shelf life of 6-12 months, though this can vary with storage conditions.

While possible, it is less common for emulsion systems due to solubility characteristics; it's primarily used in suspension and bulk polymerization.

It is typically classified as an oxidizing solid, may cause fire or explosion, and requires specific hazard pictograms

It is shipped as a refrigerated solid in temperature-controlled containers with appropriate hazard labeling.

Typical concentrations range from 0.01% to 0.1% based on monomer weight, depending on desired molecular weight and reaction conditions.

Some commercial formulations may include stabilizers like phosphites to enhance storage stability, though pure forms are often supplied without additives.

As an organic peroxide, it doesn't have a conventional flash point but decomposes exothermically when heated, potentially causing ignition.

It generally produces polymers with relatively narrow molecular weight distributions when used at appropriate temperatures and concentrations.

Dilute with appropriate solvent and incinerate at licensed facilities following local hazardous waste regulations.

Yes, it can initiate crosslinking in certain polymer systems, particularly in unsaturated polyester resins.

The compound has negative oxygen balance, meaning it requires external oxygen for complete combustion.

It effectively initiates copolymerization of various monomer pairs, though initiation efficiency may vary with monomer type.

Chemical-resistant gloves, safety goggles, face shield, and flame-retardant lab coat or protective clothing.

Only in non-implant medical devices after thorough purification; not recommended for implantable devices without extensive testing.

Approximately 1200-1400 kJ/kg, which is significant and requires careful thermal management.

When used properly, it generally doesn't impart color, though decomposition byproducts may cause slight discoloration at high temperatures.

Typically between 40-50°C, varying with package size and storage conditions.

Yes, it can be blended with other peroxides to achieve specific decomposition profiles, but compatibility must be verified.

Local exhaust ventilation with minimum air changes of 10-15 per hour in working areas.

Properly initiated polymers generally show good thermal stability, though residual peroxide may reduce thermal stability if not completely decomposed.

It is listed on the TSCA inventory in the United States for legal manufacture and use.

Only if the final polymer meets migration limits and is approved by relevant food contact regulations after thorough testing.

Negligible due to its solid state and high molecular weight, though dust may become airborne.

Suitable with proper feeding systems and temperature control, though batch processes are more common.

Water spray, foam, or powder; avoid direct water jet which may spread the material.

Possible with appropriate solvents under controlled conditions, though commercial grades are typically ready to use.

Compatible with stainless steel, polyethylene, and polypropylene; avoid contact with copper, brass, or other reducing metals.

When used appropriately, it produces polymers with consistent mechanical properties; improper use may affect molecular weight and thus properties.

Registered under REACH with full technical dossier for volumes above 1 ton per year in the EU.

Not typically, as it's designed for thermal initiation rather than radiation initiation.

Immediately flush eyes with plenty of water for at least 15 minutes and seek medical attention.

It undergoes homolytic cleavage of the peroxide bond, generating two alkoxy radicals that initiate polymerization.

Usually 100-500 microns, though micronized grades may be available for specific applications.

Limited solubility in water makes it less suitable, though it can be used with emulsifiers in some aqueous dispersions.

Acute oral toxicity (rat) LD50 is typically >2000 mg/kg, classifying it as low toxicity, though dust inhalation should be avoided.

Generally maintains good clarity in amorphous polymers; may slightly reduce clarity in crystalline polymers at high initiator levels.

Original tightly closed container in a cool, well-ventilated area away from incompatible materials.

Yes, though decomposition kinetics may change with pressure, requiring process optimization.