Perodox® 26 - Dimyristyl peroxydicarbonate

Dimyristyl Peroxydicarbonate (DMPC) is an organic peroxide compound with the chemical formula C30H58O6, used primarily as a free-radical initiator in polymerization processes. It belongs to the peroxydicarbonate ester family and features two myristyl (C14) alkyl chains attached to a peroxydicarbonate functional group.

The CAS registry number for Dimyristyl Peroxydicarbonate is 53220-22-7. This unique identifier is used in chemical databases and regulatory documentation worldwide.

Dimyristyl Peroxydicarbonate has a molecular weight of 514.78 g/mol. This value is important for stoichiometric calculations in chemical reactions and formulation development.

MYPC serves as a free-radical initiator that decomposes at moderate temperatures (40-70°C) to generate free radicals. These radicals initiate vinyl polymerizations by attacking monomer double bonds, starting the chain growth process in polymer formation.

Primary applications include: initiation of vinyl chloride polymerization for PVC production, methyl methacrylate polymerization for PMMA, styrene polymerization, unsaturated polyester resin curing, and specialty copolymer production.

Dimyristyl Peroxydicarbonate has a half-life of approximately 10 hours at 50°C. This thermal decomposition characteristic makes it suitable for polymerization processes operating in the medium temperature range.

Store in original container at 0-10°C (refrigerated conditions), protected from heat, light, and moisture. Keep away from incompatible materials such as acids, reducing agents, and combustible materials. Use dedicated peroxide storage facilities when possible.

Use appropriate PPE including chemical-resistant gloves, safety goggles, and protective clothing. Handle in well-ventilated areas, avoid heat sources, and prevent contact with incompatible substances. Have fire-fighting equipment available as it is a flammable solid.

No, Dimyristyl Peroxydicarbonate is insoluble in water due to its long hydrophobic alkyl chains. It is soluble in most organic solvents including toluene, xylene, chloroform, and monomer mixtures.

Dimyristyl Peroxydicarbonate typically has an active oxygen content of approximately 3.11%, with commercial grades having a minimum of 3.0%. This value indicates the peroxide's oxidizing capacity and initiation efficiency.

MYPC decomposes via homolytic cleavage of the peroxide bond (O-O bond) when heated, generating two alkoxycarbonyloxy radicals. These radicals further decarboxylate to yield carbon dioxide and myristyloxy radicals, which initiate polymerization.

Dimyristyl Peroxydicarbonate has a melting point range of 44-48°C. Above this temperature, it becomes a liquid and its decomposition rate increases significantly.

Compared to diethyl or diisopropyl peroxydicarbonate, DMPC has higher molecular weight, lower volatility, and different solubility characteristics due to its longer C14 alkyl chains. It decomposes at slightly higher temperatures than shorter-chain analogs.

While primarily used in bulk and solution polymerizations, DMPC can be used in emulsion systems when properly formulated with emulsifiers. Its water insolubility requires careful formulation to ensure proper distribution in the aqueous phase.

When stored properly at 0-10°C, Dimyristyl Peroxydicarbonate typically has a shelf life of 6-12 months. Storage at higher temperatures significantly reduces stability and active oxygen content over time.

Thermal decomposition yields carbon dioxide, tetradecanol, tetradecyl formate, and various hydrocarbons. The exact product distribution depends on temperature and reaction conditions.

No, MYPC is generally incompatible with metal compounds, especially transition metal salts which can catalyze its decomposition. Contact with copper, iron, cobalt or their salts may cause violent decomposition.

As an organic peroxide, Dimyristyl Peroxydicarbonate does not have a conventional flash point. It is classified as a flammable solid that can undergo self-accelerating decomposition when heated, potentially leading to combustion.

MYPC is typically synthesized by reacting myristyl chloroformate with sodium peroxide or by transesterification of dimethyl peroxydicarbonate with tetradecanol. The process requires careful temperature control and safety measures due to peroxide instability.

DMPC affects molecular weight distribution, polymerization rate, polymer structure, and end-group composition. Its decomposition kinetics influence initiation efficiency and thus polymer chain length and properties.

While primarily an initiator for chain-growth polymerization, DMPC can facilitate crosslinking in systems with multi-functional monomers or when used in combination with crosslinking agents, though it is not typically a crosslinker itself.

Typical concentrations range from 0.01% to 1.0% based on monomer weight, depending on the desired polymerization rate, molecular weight, and specific application requirements.

Oxygen is a potent inhibitor of free-radical polymerizations as it reacts with initiator radicals. For DMPC-initiated reactions, oxygen should be excluded by nitrogen purging or other inert atmosphere techniques to prevent inhibition and induction periods.

Oxygen is a potent inhibitor of free-radical polymerizations as it reacts with initiator radicals. For DMPC-initiated reactions, oxygen should be excluded by nitrogen purging or other inert atmosphere techniques to prevent inhibition and induction periods.

Common analytical methods include: active oxygen content by iodometric titration, purity by HPLC, thermal stability by DSC, and identification by FTIR or NMR spectroscopy.

Like most organic peroxides, DMPC has a significant exothermic heat of decomposition, typically in the range of 1000-1500 J/g. This requires careful thermal management during storage and handling to prevent thermal runaway.

Yes, DMPC can be activated by reducing agents in redox initiation systems, allowing polymerization at lower temperatures. Common activators include amines, transition metal ions, and other reducing species.

Due to its high molecular weight and long alkyl chains, DMPC has very low vapor pressure at room temperature. This reduces inhalation hazards compared to more volatile peroxides but does not eliminate other safety concerns.

Decomposition rate can be influenced by solvent polarity and specific solvent effects. More polar solvents may accelerate decomposition through solvation effects, while aromatic solvents can participate in chain transfer reactions.

Small quantities can be decomposed by controlled reaction with reducing agents like sodium sulfite. Larger amounts should be handled by specialized waste management services. Never dispose of peroxides in regular trash or drain systems.

While primarily a thermal initiator, DMPC has limited photosensitivity. For efficient photopolymerization, dedicated photoinitiators are preferred, though DMPC may show some initiation under UV exposure.

The bulk density of DMPC powder is typically 0.45-0.55 g/cm³. The true density (solid density) is higher, approximately 1.0-1.1 g/cm³, but the bulk form has significant void space.

Smaller particle sizes increase surface area, potentially affecting dissolution rate in monomers/solvents and decomposition kinetics. However, very fine powders present greater dust explosion hazards and require special handling.

MYPC is compatible with most polymers once polymerized, but in its initiator form it can attack and degrade some plastics. Storage containers should be polyethylene or other peroxide-compatible materials, not PVC or similar.

Yes, DMPC can be recrystallized from appropriate solvents like ethanol or acetone at low temperatures. This process requires extreme care due to peroxide sensitivity and should only be done by experienced personnel with proper safety measures.

Like many organic powders, DMPC dust can form explosive mixtures with air. The minimum ignition temperature for dust clouds is typically in the range of 300-400°C, but this should be determined experimentally for specific samples.

MYPC is classified as a flammable solid, organic peroxide (UN 3105) for transport. It must be shipped in approved packaging with temperature control, typically with refrigerated transport for larger quantities.

DMPC is stable in neutral to slightly acidic conditions. Strong acids and bases accelerate decomposition. Optimal stability is typically in the pH range of 4-8 for aqueous dispersions or when in contact with aqueous phases.

While peroxides in general can be used for polymer synthesis in biomedical applications, residual peroxide or decomposition products must be thoroughly removed. Specific biocompatibility testing would be required for DMPC-initiated polymers in medical devices.

Commercial DMPC typically contains 90-98% active ingredient. Common impurities include myristyl alcohol, myristyl chloride, carbonate esters, and moisture. High-performance grades have lower impurity levels for critical applications.

Moisture can hydrolyze peroxydicarbonates, reducing active oxygen content and generating alcohols and carbon dioxide. DMPC should be stored in sealed, moisture-proof containers to maintain stability.

For skin contact: wash thoroughly with soap and water. For eye contact: flush with water for 15 minutes and seek medical attention. If inhaled: move to fresh air. If ingested: do not induce vomiting, seek immediate medical attention.

Yes, DMPC is often used in combination with other initiators having different decomposition temperatures to maintain consistent initiation rates throughout polymerization processes with temperature profiles.

There is no specific TLV established for DMPC. As with all peroxides, exposure should be minimized using engineering controls and proper PPE. General peroxide limits and organic dust limits may apply.

Increased pressure generally accelerates peroxide decomposition slightly due to increased collision frequency. For DMPC, this effect is minor compared to temperature effects, but should be considered in high-pressure polymerization processes.

Under EU CLP regulation, DMPC is typically classified as: Oxidizing Solid Category 2, Flammable Solid Category 2, Skin Irritant Category 2, Eye Irritant Category 2, and Specific Target Organ Toxicity (Single Exposure) Category 3.

Due to its water insolubility, DMPC is not typically used in purely aqueous systems unless properly emulsified. It is more suitable for bulk, solution, or suspension polymerizations where organic phases are present.

Induction periods vary with system purity, but typically range from minutes to hours depending on temperature, monomer, and presence of inhibitors. Proper oxygen removal minimizes induction periods in DMPC-initiated systems.

MYPC is a peroxydicarbonate that decomposes at lower temperatures (40-70°C) than benzoyl peroxide (70-100°C). DMPC generates different radical types (alkoxycarbonyloxy radicals) and has different solubility characteristics due to its aliphatic chains.

For small fires: use water spray, foam, dry chemical, or carbon dioxide. For large fires: use water spray from maximum distance. Do not use water jet directly on burning material as it may spread the fire. Cool containers exposed to fire with water.

GC analysis is challenging due to DMPC's thermal lability. Specialized techniques like cool-on-column injection or derivatization may be needed. HPLC with UV or RI detection is generally preferred for peroxide analysis.

MYPC is typically packaged in polyethylene-lined fiber drums, polyethylene bags within outer packaging, or specialized peroxide containers. Package sizes range from 1 kg to 25 kg, with temperature-controlled shipping for larger quantities.

Like most organic peroxides, DMPC is photosensitive and decomposes under UV/visible light. It should be stored in opaque containers or in the dark to prevent photochemical decomposition during storage.

MOQ varies by supplier but is typically 1-5 kg for laboratory quantities and 25-100 kg for industrial quantities. Custom synthesis may be available for larger orders with specific purity requirements.