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Shandong Do Sender Chemicals Co.,Ltd.
- Organic Peroxide
- Hydroperoxides
- Ketone Peroxides
- Alkyl Peroxides
- Acyl Peroxides
- Ester Peroxides
- …
- Organic Peroxide
- Hydroperoxides
- Ketone Peroxides
- Alkyl Peroxides
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- Ester Peroxides

Cumyl peroxyneodecanoate - Perodox® 99
CAS: 26748-47-0
High-Efficiency Polymerization Initiator for LDPE and PVC Production
Product Overview
Perodox® 99,Cumyl peroxyneodecanoate (CPND) is an organic peroxide widely used as a highly efficient initiator (radical source) for polymerization processes. It appears as a milky white emulsion or clear liquid, typically supplied as a 75% solution in odorless mineral spirits or isododecane. With its high activity and non-oxidizing properties, CPND enables constant rate polymerization over entire reaction periods when combined with thermally more stable peroxides.
CAS Number:26748-47-0
TSCA Status:Listed on inventory
EINECS/ELINCS No.:247-956-7
Molecular Weight:306.4
Active Oxygen:5.22%
Purity:74.0-76.0 %
Appearance:Clear liquid
CPND offers particular advantages including being liquid (therefore easy to dose), non-oxidizing, and having high activity. It is especially effective for bulk or suspension polymerization of monomers, particularly vinyl chloride.
Applications
Cumyl peroxyneodecanoate (Perodox® 99) serves as a critical component in various industrial polymerization processes,
with its primary applications in plastic manufacturing
LDPE Polymerization of Ethylene
CPND is an efficient initiator for ethylene polymerization under high pressure in both autoclave and tubular processes. To obtain a wide spectrum of polymerization temperatures, combinations with other peroxides are applied in practice. Depending on reaction conditions, CPND is active in the temperature range of 130-170°C
PVC Manufacturing
CPND is used as an initiator for the suspension and mass polymerization of vinyl chloride between 40°C and 65°C. It is often combined with less active peroxides such as peroxydicarbonates or diacylperoxides to increase reactor efficiency.
Other Applications
Beyond its primary uses, CPND finds applications in coatings, adhesives, and composites where its properties as a radical initiator are beneficial. The automotive sector utilizes CPND in the curing of resins and composites for lightweight component production.
Technical Data
Comprehensive technical specifications and performance characteristics of Perodox® 99
Properties
Appearance:Clear liquid or milky white emulsion
Assay:75.0±1.0%
Molecular Formula:C19H30O3
Molecular Weight:306.4 g/mol
Density at -10°C:962 kg/m³
Viscosity at -10°C:74.6 mPa.s
Flash Point:108.1°C
Boiling Point:375°C
Half-Life Data
The reactivity of organic peroxides is typically indicated by their half-life (t1/2) at various temperatures. For CPND in chlorobenzene:
Half-Life Temperature
0.1 hour 75°C
1 hour 56°C
10 hours 38°C
Packaging Information
Standard packaging is a 30-liter HDPE can for 25 kg peroxide solution. Both packaging and transport meet international regulations.
Safety & Storage
Proper handling and storage procedures for Perodox® 99
Storage Precautions
Store in a cool and ventilated space with the warehouse temperature not exceeding -20°C
Stay away from fire and heat sources
Should be stored separately from acids, inflammables, combustibles, and reducing agents
The lighting and ventilation facilities in the storage room should be explosion-proof
Handling should be performed with care to prevent damage to packaging and containers
Fire Protection Measures
This product may decompose violently due to heat and can catch fire. A small number of products should be quickly extinguished with foam or dry powder fire extinguisher. The fire should be addressed from a safe distance using a water gun, and the fire department should be notified
Emergency Temperature Guidelines
Maximum Storage Temperature (Ts max) -20°C
Minimum Storage Temperature (Ts min) -30°C
Self-Accelerating Decomposition Temperature (SADT) 10°C
Emergency Temperature 0°C
Controlling Temperature -10°C
Transportation Regulations
Cumyl peroxyneodecanoate is classified as Organic peroxide type D; liquid, temperature controlled; Division 5.2; UN 3115; PG II. Rail (RID) and air (ICAO-TI/IATA-DGR) transport are forbidden.
Decomposition Products
Carbon dioxide, 2-Phenylisopropanol, Isomers of neonane
Frequently Asked Questions
Comprehensive questions and answers about Perodox® 99 applications, safety, and technical specifications
What is Cumyl peroxyneodecanoate used for?
Cumyl peroxyneodecanoate is primarily used as an initiator (radical source) for polymerization and copolymerization processes. Its main applications include the production of low-density polyethylene (LDPE) and the suspension polymerization of vinyl chloride (PVC). It enables controlled polymerization at specific temperature ranges and is often combined with other peroxides to optimize reactor efficiency.
How should Cumyl peroxyneodecanoate be stored?
CPND requires strict temperature-controlled storage conditions. It should be stored in a cool, well-ventilated space at temperatures not exceeding -20°C. The storage area should be away from heat sources, open flames, and incompatible substances such as acids and reducing agents. Facilities should have explosion-proof lighting and ventilation systems. Proper storage is critical to maintain product stability and safety.
What is the shelf life of Cumyl peroxyneodecanoate?
When stored and transported according to manufacturer specifications under recommended conditions, Cumyl peroxyneodecanoate typically has a shelf life of three months. Proper temperature control is essential to maintain product quality throughout this period.
What safety precautions are necessary when handling CPND?
Handling CPND requires strict safety measures including personal protective equipment, careful handling to avoid container damage, and prevention of exposure to heat. The compound may decompose violently when heated and poses fire hazards. Emergency procedures should include using foam or dry powder extinguishers for small fires and water spray from a safe distance for larger incidents. Always refer to the Material Safety Data Sheet (MSDS) for detailed safety information.
What are the temperature parameters for CPND in polymerization processes?
CPND operates effectively within specific temperature ranges depending on the application. For LDPE production, it is active between 130-170°C. For PVC suspension polymerization, the effective temperature range is 40-65°C. The half-life data indicates its reactivity at various temperatures: 0.1 hour at 75°C, 1 hour at 56°C, and 10 hours at 38°C.
What is the classification of CPND for transportation purposes?
CPND is classified as Organic peroxide type D; liquid, temperature controlled; Division 5.2; UN 3115; PG II. Important restrictions apply to its transportation: rail (RID) and air (ICAO-TI/IATA-DGR) transport are forbidden. These classifications reflect the compound's thermal sensitivity and potential hazard profile.
Can CPND be combined with other peroxides?
Yes, CPND is often used in combination with other peroxides to achieve optimal polymerization results. For PVC production, it is frequently combined with less active peroxides such as peroxydicarbonates or diacylperoxides to increase reactor efficiency. These combinations help maintain a constant polymerization rate throughout the reaction period.
What are the major decomposition products of CPND?
When decomposed, CPND primarily breaks down into carbon dioxide, methane, neodecanoic acid, isoaliphatics, 2-phenylpropanol-2, acetophenone, and cumene. Understanding these decomposition products is important for safety planning and emergency response procedures.
What is the active oxygen content of CPND?
Cumyl peroxyneodecanoate typically has an active oxygen content of 5.22%. This value is an important parameter for understanding the compound's effectiveness as a polymerization initiator.
Are there alternative names for Cumyl peroxyneodecanoate?
Yes, CPND is known by several alternative names including Neodecaneperoxoic acid, 1-methyl-1-phenylethyl ester; Peroxyneodecanoic acid, α,α-dimethylbenzyl ester;
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