Perovion EHP L-60 is a liquid organic peroxide based on di(2-ethylhexyl) peroxydicarbonate, supplied as a 60% aqueous emulsion for use as an initiator in vinyl chloride and vinylidene chloride suspension and emulsion polymerization processes across the PVC production industry. Perovion EHP L-60 gives PVC producers a water-based peroxide format that is easier to handle, dilute, and dose compared to solvent-based peroxydicarbonate initiators, reducing solvent-related handling and disposal considerations at the plant level.
Overview
Perovion EHP L-60 belongs to the peroxydicarbonate family of organic peroxides, widely used as low-temperature initiators for suspension and emulsion polymerization of vinyl chloride monomer. This chemistry is favored across the PVC industry for its rapid, efficient radical generation at temperatures compatible with standard reactor cooling capacity. Because Perovion EHP L-60 is supplied as an aqueous emulsion rather than a solvent solution, it offers processors improved handling safety, straightforward dilution with water, and easier integration into closed reactor charging systems that are increasingly standard in modern PVC production facilities.
Perovion EHP L-60 is applied as an initiator for the suspension polymerization of vinyl chloride in the temperature range between roughly 40°C and 65°C, a range chosen to balance polymerization rate against reactor cooling capacity and resin quality targets. It is frequently used in combination with other peroxides to increase reactor efficiency across a broader initiation temperature range, allowing PVC producers to fine-tune polymerization kinetics for different resin grades and to optimize batch cycle time for specific product specifications.
Key Features
- 60% aqueous emulsion format for improved handling safety
- Effective low-temperature initiator for vinyl chloride and vinylidene chloride polymerization
- Pumpable and easy to dilute with water for closed reactor technology
- Compatible for combined use with other organic peroxide initiators
- Suited to suspension polymerization processes run between 40°C and 65°C
Typical Applications
Perovion EHP L-60 is primarily used in the suspension polymerization of PVC resin, where its water-emulsion format simplifies charging, metering, and dilution compared to solvent-based peroxydicarbonate grades used across pipe, profile, film, and rigid packaging PVC production lines. PVC producers value the reduced solvent handling burden and the compatibility of Perovion EHP L-60 with modern closed reactor charging systems designed to minimize operator exposure, supporting both safety objectives and regulatory compliance goals at the plant level.
Perovion EHP L-60 is also commonly blended with complementary initiators to build a multi-stage initiation profile across a polymerization batch, helping reactor operators achieve consistent conversion rates and resin porosity while managing exotherm throughout the cycle, which is particularly important for suspension PVC grades used in rigid pipe and profile extrusion.
Technical Specifications
- Chemical Type: Di(2-ethylhexyl) peroxydicarbonate, 60% emulsion in water
- CAS No.: 16111-62-9
- Molecular Formula: C18H34O6
- Storage Temperature Range: To be confirmed based on the final specification sheet.
- Appearance: White to off-white liquid emulsion
- Active Content: 60%
- Shelf Life: To be confirmed based on the final specification sheet.
Thermal Stability
Perovion EHP L-60 has a decomposition profile typical of peroxydicarbonates, among the most temperature-sensitive classes of commercial organic peroxide initiators, generating radicals efficiently at the moderate temperatures used in PVC suspension polymerization. This behavior requires disciplined cold-chain handling from the point of manufacture through final use in the reactor. Exact one-hour and ten-hour half-life temperatures, along with self-accelerating decomposition temperature (SADT), are to be confirmed based on the final specification sheet.
Because Perovion EHP L-60 decomposes readily at temperatures only moderately above typical ambient conditions, it requires continuous refrigerated storage and transport, with careful attention to temperature control at every stage between manufacture and reactor charging, including transfer, sampling, and quality inspection steps.
Storage Recommendations
Perovion EHP L-60 requires refrigerated storage at temperatures well below ambient, consistent with standard practice for peroxydicarbonate initiators supplied as aqueous emulsions, and facilities should maintain backup refrigeration capacity to guard against unplanned equipment downtime. Recommended minimum and maximum storage temperatures and shelf life are to be confirmed based on the final specification sheet, but facilities should treat Perovion EHP L-60 as a temperature-critical material requiring continuous cold chain management, including periodic agitation to prevent emulsion separation during extended storage and routine temperature log review by quality personnel.
Packaging & Transport
Perovion EHP L-60 is classified as an organic peroxide for transport purposes and must be shipped under the applicable UN organic peroxide entry with mandatory temperature control, consistent with the temperature-sensitive nature of peroxydicarbonate chemistry. Customers should confirm local transport and storage regulations with their logistics provider before scheduling delivery of Perovion EHP L-60. Exact UN number, packing group, and temperature control classification are to be confirmed based on the final specification sheet.
Standard packaging formats for refrigerated aqueous peroxide emulsions of this type include insulated HDPE containers or drums designed to maintain the required temperature range during transit, and shipments must be accompanied by the current Safety Data Sheet and any required organic peroxide transport documentation. Receiving facilities should confirm cold storage capacity is available before Perovion EHP L-60 arrives on site.
Safety & Handling
Perovion EHP L-60 should be handled in accordance with applicable safety procedures for organic peroxides, with particular attention to its temperature sensitivity, despite the improved handling profile offered by its aqueous emulsion format compared to solvent-based alternatives. The product is classified as an oxidizing material and requires appropriate storage and handling measures, including keeping it segregated from reducing agents, accelerators, acids, and other incompatible substances.
Operators should review the Safety Data Sheet before handling Perovion EHP L-60 and should wear appropriate personal protective equipment including chemical-resistant gloves and eye protection when transferring or dosing the emulsion, and should ensure all metering equipment is rated for continuous refrigerated operation. Facilities working with Perovion EHP L-60 should also train personnel on emulsion-specific hazards, since aqueous peroxide formulations can present different splash and contact risks than solvent-based grades. For related peroxide chemistries used in similar low-temperature polymerization applications, see Perovion TBPND L23 and Perovion TAPEH L12, related liquid organic peroxide initiators.