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HS Code |
664231 |
| Cas Number | 26322-14-5 |
| Chemical Name | Distearyl Peroxydicarbonate |
| Synonyms | Peroxydicarbonic acid, distearyl ester; DSPDC |
| Appearance | White to off-white paste or solid |
| Odor | Faint, characteristic |
| Content | ≤87% |
| Stabilizer | Stearyl alcohol |
| Molecular Formula | C38H74O6 |
| Molecular Weight | 626.0 g/mol |
| Melting Point | 30-40°C |
| Solubility | Insoluble in water, soluble in organic solvents |
| Decomposition Temperature | Above 40°C (can decompose violently) |
| Storage Temperature | Store below 0°C |
| Primary Use | Free-radical polymerization initiator |
| Sensitivity | Sensitive to heat, friction, and shock |
As an accredited Distearyl Peroxydicarbonate [Content ≤ 87%, Containing Stearyl Alcohol] factory, we enforce strict quality protocols—every batch undergoes rigorous testing to ensure consistent efficacy and safety standards.
| Packing | Packaged in a 25 kg net weight, airtight, HDPE drum with tamper-evident seal, labeled with hazard and handling instructions. |
| Shipping | Distearyl Peroxydicarbonate (≤87%, with Stearyl Alcohol) should be shipped as a temperature-controlled, dangerous good. Protect from heat, sunlight, and sources of ignition. Use appropriate UN-approved containers. Ensure proper labeling and placarding according to regulations (e.g., UN 3106, Class 5.2). Store and transport with compatible, inert materials only. |
| Storage | Distearyl Peroxydicarbonate [Content ≤ 87%, Containing Stearyl Alcohol] should be stored in a cool, dry, and well-ventilated area away from heat, sparks, flame, and direct sunlight. Keep the container tightly closed and separated from incompatible materials such as acids, bases, and reducing agents. Refrigeration may be required. Avoid physical shock and store at temperatures recommended by the supplier. |
Applications of Distearyl Peroxydicarbonate [Content ≤ 87%, Containing Stearyl Alcohol] in Industrial ManufacturingDistearyl Peroxydicarbonate (DSPDC) serves as a specialty organic peroxide used predominantly for polymer manufacturing and advanced material processing. Its unique properties offer precise control over polymerization and product quality in high-demand industrial settings. As a direct manufacturer, we supply tailored grades suitable for critical production steps in key chemical sectors. 1. Suspension Polymerization of Polyvinyl Chloride (PVC)The material functions as an initiator in the suspension polymerization of vinyl chloride monomer, relied on by major PVC resin producers for its clean radical profile and controlled activity. Manufacturers select DSPDC for temperature-sensitive runs, targeting specific K-values and minimizing yellowing in finished resins used in pressure pipes, films, and extrudates. DSPDC’s inclusion ensures uniform nucleation, improved resin morphology, and consistent molecular weight distribution, critical to downstream compounding and extrusion. Stearyl alcohol content aids in reducing sticking and mitigating foam formation, protecting reaction yields during high-volume runs. Industry compliance standards
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2. Acrylic Monomer Polymerization (PMMA and Copolymers)Poly(methyl methacrylate) (PMMA) and its copolymers require carefully controlled radical initiators for batch and continuous polymerization. DSPDC plays a key role for fiber-grade and optical-quality casting resin. Its thermal decomposition aligns with process windows for bulk, solution, and emulsion polymerizations in large reactor systems. The stearyl alcohol component helps maintain viscosity control and reduces coagulum formation during final product isolation. Leading acrylic producers use our product for clear sheets, optical moldings, and lightweight structural composites. Industry compliance standards
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3. Production of Liquid Silicone Rubber (LSR) Via Radical PolymerizationChemical manufacturers deploy DSPDC in the production of LSR grades where room or low-temperature curing is required for thick-section or rapid-cycle moldings. The controlled release of radicals enables uniform network crosslinking and consistent mechanical properties in finished products. The co-delivered stearyl alcohol acts as a secondary process aid, improving the stability of formulations against premature setting and reducing surface defects in downstream moldings. Industry compliance standards
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4. Crosslinking of Polyethylene (PE) for High-Voltage Cable InsulationManufacturers for power cable insulation use DSPDC as a crosslinking initiator in the production of polyethylene-based insulating compounds. Its controlled decomposition profile at lower temperatures lowers the risk of premature crosslinking in extrusion, while the stearyl alcohol serves as in-situ plasticizer and mold release agent. This ensures clean extrusion, improves dielectric properties, and minimizes gel formation within cable insulation materials. Industry compliance standards
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A lot of customers in polymerization and plastics industries ask for a product that delivers consistent results every time they use it. Distearyl peroxydicarbonate, which we manufacture with a content not exceeding 87% and always combined with stearyl alcohol, stands out among organic peroxides for this reliability. Every batch we make comes from firsthand oversight—right inside our plant, with technicians who understand which reaction conditions drive purity and performance.
Our chemists insist on this formulation because it offers a balance that addresses real pain points in plant operations. Stearyl alcohol, mixed in during synthesis, acts as more than just a stabilizer: it helps manage the decomposition kinetics for more even polymer growth. The peroxide handles the heavy lifting as a radical initiator, but stearyl alcohol helps operators avoid runaway exotherms and spotty yields that can wreck a week’s production. We don’t ship what we haven’t tested ourselves, and we continue to invest in controls that keep the peroxide’s content right where it needs to be for both safety and activity.
Every ton we ship reflects years of hands-on running reactors, washing crystals, and troubleshooting filtration bottlenecks. Plant operators have told us that residue can foul feeders or leave a dusty mess down the line, so our batches are washed multiple times to cut down on unreacted materials. We learned early that a greasy, caked mass wastes both your labor and ours; our drying and milling steps turn out a free-flowing powder or granular product that doesn’t stick or settle unevenly in storage.
We keep the stearyl alcohol presence deliberate, hovering right around an amount that tames the peroxide’s reactivity in long-term shipping but doesn’t dilute its effectiveness in your reactor. This gives processors more flexibility, especially in continuous and batch operations where process controls may be tight—at least in theory—but real-life swings in temperature or mixing still happen.
We classify our Distearyl peroxydicarbonate by content, not an arbitrary grade. We keep the peroxide content at or below 87% for a reason. Higher levels ramp up the handling hazards and shorten shelf life, especially under suboptimal storage. We’ve run degradation studies across seasons, and lower content always shows steadier results without giving up yield or product quality during polymerizations. Stearyl alcohol adds a margin of thermal safety while offering a small window of flexibility if plant temperatures drift out of spec.
Customers sometimes ask why we don’t offer maximum purity or variants with no stearyl alcohol. Cutting out the stearyl alcohol can, in some situations, produce brighter results in lab-scale syntheses, but losses in stability, convenience, and flow properties almost always cancel out the perceived gains. In real world factories, process interruptions, line stops, and local overheating pop up, especially for folks running several reactors or operating in warm climates. Our formulation keeps peroxide content stable even over long hauls in humid or less-than-ideal warehouses.
On the line, the main role for our product is as an initiator for suspension and emulsion polymerizations, especially for vinyl chloride, vinyl acetate, and acrylic monomers. These reactions depend on the choice of peroxide for molecular weight control, polymer composition, and ease of scale-up. What operators have told us—and what our plant engineers see firsthand—is that a controlled decomposition temperature in the mid-40s Celsius range suits most production setups.
Our process turns out a granular or powdered form that disperses fast, blending right into the aqueous phase in standard reactors without heavy pre-mixing or extra agitation. In autoclavable reactors, our batches avoid hot spots that can lead to subpar initiator use. Factories dealing with sensitive resins often rely on our product for the consistent decomposition rate—a variable that becomes a bottleneck in scale-up when quality or content swings unpredictably. Selecting raw materials, running pilot trials, and then scaling up in the same facility lets us confirm that end users won’t face surprises when moving from the lab to commercial volumes.
Manufacturing Distearyl peroxydicarbonate is not just about ticking off chemical specs. Unlike other peroxides such as dilauroyl peroxide or diisopropyl peroxydicarbonate, our product offers smoother handling. It clumps far less during transfer in silos or pneumatic lines. Operators find that it doesn’t pack into hard lumps in bins or feed hoppers, which helps avoid shutdowns for cleaning and keeps downstream processes stable.
We control crystal size distribution closely by tweaking crystallization conditions. Operators in different plants have told us about flow interruptions and blockages with other brands or with higher-content peroxides. Our in-house process avoids these headaches, minimizing downtime and keeping labor costs manageable. It isn’t just about running analyses in the quality lab; it’s about what actually moves through a screw feeder or dissolves predictably in suspension reactors day after day.
Some ask if our product suits continuous operation or only batch. The short answer: it handles both. Users running continuous lines often worry about initiator dosing variability or accumulations when demand unexpectedly drops. Because we maintain our peroxide’s granularity and flow so precisely, the risk of agglomeration or dry blockages stays low. Line managers can keep cycles running without frequent stops for cleanout. In batch systems, processors see a repeatable onset of decomposition and limited induction period, which shortens cycle time and tightens product specs batch to batch.
Organic peroxides have a mixed reputation, mostly due to horror stories from mismanaged storage or mishandling. From our end, controlling both the content and the presence of stearyl alcohol helps us put a safer product in our customers’ hands. We don’t expect users to work with fume hoods or elaborate air conditioning in most plants, but even in warm, humid environments, the combination we ship reduces the rate of accidental self-heating.
This isn’t just opinion. Over years of fielding technical support calls and following up after product shipments, we’ve tracked incidents and shelf-life claims from dozens of customers. Product with a touch more stearyl alcohol—on the order of several percent—stays stable for months longer. Users operating in regions with unreliable cold storage or with aging facilities see far fewer breakdown issues. We continually update our handling guidance, but the real credit comes from decisions made at the reactor and packaging stages.
Logistics often prove as critical as chemistry. Our Distearyl peroxydicarbonate stays within hazard category tolerances but needs thoughtful handling. Our own stores maintain temperature and humidity controls that mirror realistic conditions—a point borne out by short- and long-haul transit tests that replicate routes our shipments will follow. Rather than chasing theoretical maximum shelf life, we focus on ensuring our initiator holds up during the months it spends in local warehouses.
Packaging comes in forms that have survived rough handling, temperature fluctuations, and extended storage at distributors’ sites. We build bags and drums from materials that resist both oxygen and moisture penetration, and we add internal liners based on feedback from operators who know their sites may not always have perfect climate control. Some customers run smaller facilities or only draw down initiator stocks every few weeks; for them, we offer batch sizes scaled to regular usage schedules to avoid product sitting too long. This flexibility comes directly from years inside manufacturing and warehouse management, not from marketing briefs.
Comparisons get drawn almost daily between our Distearyl peroxydicarbonate and alternatives like dilauroyl peroxide or dibenzoyl peroxide. Each initiator has its champions, but our product’s blend of stearyl alcohol and controlled content gives a decomposition profile that cuts process variability. Customers switching over from other peroxides sometimes note a smoother polymerization curve—less chasing small temperature or pressure upsets, fewer off-spec runs, and a more predictable product.
Some peroxides push higher reactivity but create risks in storage and transport, especially as process plants grow and procedures tighten. Overly reactive alternatives build up fines, raise static discharge risks, and lose their punch fast during transit in tropical or subtropical climates. We selected stearyl alcohol as the inert carrier specifically to keep the peroxide’s energy bottled up until it reaches the reactor. Our plant teams have run enough head-to-head trials—both blind and open label—to know that higher decomposability on paper rarely translates to real plant wins if you end up discarding off-spec, caked, or half-dead initiator stock.
The argument for lower- or no-alcohol grades sometimes comes from labs or R&D benches that crave theoretical maximum yield. In every scaling trial we’ve run, though, managing fine powder stability and drop-in reactor performance takes priority. The stearyl alcohol-modified batch carries through feeding and mixing with less dust generation, which matters a lot more to the people standing with a shovel at the bottom of the feed hopper at the end of a shift than marginal upticks in theoretical purity.
We have never thought of ourselves as just chemical fabricators churning out a commodity. We stay close to customers, both at the level of engineering and operations, listening to the quirks of their reactors, the logistics of remote distribution, and the constraints of budgets and local regulations. Real problems—dust, clumping, and unpredictable decomposition—are what we prioritize in every process tweak. Supplier switchovers, local environmental changes, or updated standards regularly prompt us to revisit and refine our steps, making sure the peroxide content, alcohol proportions, and ancillary properties work for users in all climates.
We have invested heavily in new blending and drying technologies based on direct feedback from operators who want less packing, better pourability, and more predictable dosing. Quality checks mean little if they only cover a fraction of real-world use scenarios. The real test comes from the regulars who call after a summer heat spike, a new warehousing policy, or an unexpected surge in production demands. Our responsibility runs deeper than hitting an assay target—it’s about making sure every shipment supports both plant safety and uninterrupted production.
Demand for sustainable, stable chemicals keeps growing. We know customers face pressure to optimize productivity and reduce plant hazards, all while dealing with supply chain squeezes. Rather than just following regulatory updates or customer trends, we overhaul our plant controls, source cleaner feedstocks, and maintain open lines with users about how changes affect real-life outcomes. We see a shift in preference towards peroxides that balance strength and stability, rather than chasing bold purity figures that do not translate to safer plants or more reliable yields.
Our ongoing research focuses on pushing shelf life, streamlining batch-to-batch consistency, and cutting out residual impurities that can creep in during long syntheses. Every process tweak aims to make life easier for operators and plant managers thrown curveballs by changing inputs or shifting customer needs. Trials on reformulated batches always include feedback from user pilot lines and full-scale production—not just results at the bench.
We have found through decades of manufacturing that small product details—particle size, flow behavior, temperature stability—make the difference between smooth shifts and lost time. Our Distearyl peroxydicarbonate speaks to these truths. We keep open channels with every user, whether they’re a global resin producer or a regional plastics line. Maintenance crews, process engineers, and production supervisors all shape how we improve lot by lot. Our approach keeps us nimble, ready to adjust in response to a recall, a breakthrough from the lab, or a new regulation on peroxide shipping.
Everytime our teams spot a new trend—be it from stricter environmental controls or from customer audits on storage safety—we run in-plant tests and implement fixes where they are needed most. Our partnerships with users create a cycle of improvement, not just for our Distearyl peroxydicarbonate, but for every related initiator that shares our production pipeline. End-of-shift debriefs, technical helplines, and long-form feedback sessions form the backbone of product advancements we roll out each year.
Producing Distearyl peroxydicarbonate with controlled content and a thoughtful level of stearyl alcohol is the result of hard-won experience. This combination means more than just another entry in a catalogue; it embodies the decisions of plant operators, the feedback of shipping managers, and the oversight of engineers who back each batch. As manufacturers invested in every shipment, we see firsthand the demands of safety, reliability, and process stability that shape the chemical industry.
From selection of every raw material, through to drying, packaging, and follow-up after delivery, our focus remains on giving industrial users a reliable, actionable product. That dedication shows in every granular batch we send out—and every time a user’s line keeps running right on schedule.