Perodox® 24 - Dicetyl peroxydicarbonate

It is an organic peroxide compound primarily used as a free radical initiator in polymerization processes, known for controlled decomposition characteristics.

The CAS registry number is 26322-14-5.

Its molecular formula is C₃₄H₆₆O₆.

Its molecular weight is 570.9 grams per mole.

It typically appears as a white crystalline powder or flakes.

Its IUPAC name is hexadecoxycarbonyloxy hexadecyl carbonate.

Its IUPAC name is hexadecoxycarbonyloxyhexadecyl carbonate.

Its density is approximately 0.936 g/cm³ at 20°C.

It is poorly soluble in water (1μg/L at 20°C)but soluble in hydrocarbons, chlorinated solvents, and some esters.

Its melting point is 52-54°C, and it decomposesbefore or during melting.

It has limited stability at room temperature,requiring storage at -20°C to 5°C; its self-accelerating decomposition
temperature is 40°C.

It is a free radical initiator for thepolymerization of vinyl monomers, especially for PVC production.

Itscontrolled decomposition rate ensures consistent polymer properties, low"fish-eye" levels, and narrow resin particle size distribution.

Yes, it is suitable for both suspension andemulsion polymerization processes.

It can initiate polymerization of vinylchloride, vinyl acetate, acrylates, methacrylates, and styrene.

Yes, it is commonly used to produce copolymerswith specific composition and properties.

It is used in plastics manufacturing, polymerproduction, specialty chemicals, adhesives, coatings, and materials science research.

Processed and purified polymers initiated by it can be used for food-contact applications if they meet regulatory standards and migration limits.

It balances decomposition rate, solubility and handling characteristics, ideal for moderate-temperature PVC production.

The typical concentration ranges from 0.01% to 0.5% based on the monomer weight.

No, it is suitable for low to medium temperature processes; other initiators are preferred for high-temperature applications.

It is thermally unstable, may decompose violently above 40°C, and can cause skin and eye irritation.

Store it in a cool, well-ventilated area away from heat sources at -20°C to 5°C; the control temperature is 30°C and emergency temperature is 35°C.

Use chemical-resistant gloves, safety goggles or face shield, protective clothing, and respiratory protection if needed; handle in a chemical fume hood.

Evacuate the area, eliminate ignition sources, collect the material with non-sparking tools, and use inert damp noncombustible material for small spills.

It is incompatible with strong acids, bases, reducing agents, amines, and certain metals.

It has a limited shelf life when stored properly; stability decreases significantly above 30°C.

Use water spray, fog, or alcohol-resistant foam; avoid direct water jet, evacuate the area, and cool containers with water until the fire is out.

For skin contact: wash with soap and water; for eyes: flush with water for 15 minutes; for inhalation: move to fresh air; for ingestion: seek medical attention immediately.

Yes, it is a hazardous material with UN numbers 3120, requiring specific packaging, labeling and documentation; rail and air transport may be prohibited.

It may decompose explosively when heated, contaminated, shocked or rubbed, and is sensitive to temperature, light and incompatible materials.

Its theoretical active oxygen content is 2.80%.

The 10-hour half-life temperature is 48°C; 1-hour is 65°C and 0.1-hour is 84°C.

Purity is determined by iodometric titration and HPLC for impurity profiling.

Common impurities include moisture, decomposition products, and residual synthesis byproducts.

Decomposition rate increases exponentially with temperature, with an activation energy of 124.30 KJ/mol.

Compatible solvents include aliphatic andaromatic hydrocarbons, chlorinated solvents, and some esters.

Concentration is measured by iodometrictitration, UV-Vis spectroscopy or HPLC.

It ranges from 91% (powder) to 94.5% (flake),with premium grades up to 98-99.9% purity.

Performance varies based on monomer solubility,reactivity ratios and polymerization conditions; it is highly efficient for vinyl chloride and common vinyl monomers.

Higher initiator concentrations generallylead to lower polymer molecular weights.Regulatory & Environmental Information

It is classified as hazardous under GHS criteria and is an Organic peroxide Type D.

Yes, it is regulated under UN Recommendations on the Transport of Dangerous Goods as Class 5.2.

Dispose of it as hazardous waste through licensed facilities; small quantities can be decomposed with reducing agent solutions under controlled conditions.

It may be toxic to aquatic organisms; its decomposition products include carbon dioxide, carbon monoxide and hexadecanol.

Yes, it is subject to REACH regulations in the EU with EC number 247-611-0.

Employers must provide training, PPE and engineering controls, and implement proper storage, handling and emergency procedures.

It is not typically present in final products, but polymers using it may have restrictions based on residual content and migration limits.

Shipments should include SDS, technical datasheet, certificate of analysis, and transport documents with hazard classification.

Shipments should include SDS, technical datasheet, certificate of analysis, and transport documents with hazard classification.

Regulations vary by country; it is listed in China's Dangerous Chemicals Directory.

Thresholds depend on EPA programs such as TRI and CERCLA; manufacturers and importers should consult current regulations.