author In today’s tough world of materials science, makers often face harsh temperatures and tough environmental pressures. Think of seals in freezing factories or wiring for high-power lines in icy weather. The strength of polymers relies a lot on special additives mixed in during compounding. Among them, DOS plays a key part in advanced rubber and plastic mixes.
Dioctyl Sebacate (DOS) is a strong straight-chain ester plasticizer. At Yuanyide, we make DOS as a clear, oily fluid. It works as a standard cold-weather plasticizer. DOS fits well with PVC, vinyl chloride copolymers, and synthetic rubber. These need to handle very hard conditions. Plus, it shows great resistance to light and good insulation.
At Yuanyide, quality means clear standards you can check.
| Parameter | Index |
| Governing Standard | HG/T 3502-2008 |
| Purity | ≥ 99.5% |
| Acid Value | ≤ 0.04 mg KOH/g |
| Flash Point | ≥ 215℃ |
We also keep the water content ≤ 0.05% tight. This stops bad reactions in hot processing steps. For example, in a real factory run, low water helps avoid bubbles in extruded sheets, which could ruin a batch of cable covers.
The best-known feature of DOS is how it keeps materials soft at very low temperatures. Regular polymers get hard and crack easily in the cold. But Yuanyide’s DOS functions as an effective plasticizer against freezing in the polymer base. It provides excellent low-temperature flexibility and low volatility compared with general-purpose plasticizers such as DOTP. Compared with adipate plasticizers like DOA, DOS offers a better balance of low-temperature performance and thermal stability. That’s why it’s the preferred plasticizer for parts built for Arctic work.
DOS lowers the point at which the compound turns stiff. As a result, items like top seals or gear for outdoors stay workable and bendy. This bendiness lasts. Our DOS holds in place well because it doesn’t evaporate much. So, it avoids the hardening that happens when cheap plasticizers leak out over time. End products thus serve much longer.
In strong compounding jobs, the plasticizer migration is a big weak spot. If it shifts to the top, the material loses its good traits and turns tacky or hard. Yuanyide’s DOS is built to resist migration and resistance to volatilization, even with heat from hard rubbing or fast pushing in machines. Such steadiness matters for layered goods. There, the plasticizer must remain in its spot to not harm nearby parts.
In electronics and power fields, shielding from electricity is key. DOS gives top-notch insulation. When paired with its heat hold, it becomes vital for covers on high-power cables. At Yuanyide, our DOS delivers the strength needed to guard key setups from power leaks and weather damage.
A special plus of DOS comes during the processing or compounding stage. It offers good slip when warmed, which helps create an even surface and an improved surface finish and soft hand feel. This counts a lot for buyer products like quality synthetic leather in car interiors or fine chairs.
At Yuanyide, we run six plasticizer production lines with an annual comprehensive production capacity of 50,000 tons. We get that smooth output drives success. The clean makeup and steady traits of our DOS cut the need for tweaks on lines. This leads to quicker runs and less scrap. Against picks like Diethyl hexyl cyclohexane (DENCH), known for quick uptake, DOS gives a fair handling range that suits strong rubber jobs well.
Cable makers use a lot of our DOS. It is best for making cold-tough wire and cable mixes for outdoor phone and power nets. While Dioctyl phthalate (DOP) works for basic winter cables, DOS goes to the toughest specs where reliability is critical.
For synthetic leather and synthetic leather, DOS goes into clothing, chairs, and car leather. It gives these improved softness and flexibility and stops cracks from cold air or chill. It blends well with PU (Polyurethane), so it’s a handy pick for fake fabric makers.
In the Automobile Manufacturing Industry, lasting and light parts matter. Yuanyide’s DOS mixes into synthetic rubber for pads, rings, and seals. These must be air and water-tight under high pressure and changing temperatures.
Started in 1995, Yuanyide has focused for 30 years on making fine plasticizers. We do more than supply; we team up with know-how on mix tweaks. Over the years, we’ve helped over 200 clients refine formulas, cutting costs through better additive blends.
We hold to the “quality-first” and “fresh-ideas” goals. Each lot of our DOS faces tough in-house checks. We also back tests by big names like SGS, BV, and Intertek for open proof and world rules.
With 50,000 tons a year, Yuanyide meets big industry demands. We give a full plasticizer package, from research and advice to custom OEM/ODM work and 7×24 loading help. Our spot in the Circular Economy Industrial Park keeps making steady and ongoing progress. This gives worldwide buyers a supply chain they can count on.
No one can downplay the key role of DOS in current making, especially as fields aim for better standards and special uses. Picking Yuanyide’s DOS means working with a team set on skill in tech. Looking ahead in chemical aids, we keep our aim on giving the stability and new ideas your lines need.
Set to lift your material work? Contact Yuanyide today to request a sample of our high-purity DOS or visit our factory display to see our production expertise in action.
A: DOS mainly serves as a strong, cold-tough plasticizer for PVC, vinyl chloride copolymers, and synthetic rubber. It proves vital for goods that hold bendiness at very low temperatures, like outdoor wire and cable mixes, fine fake leather, and factory seals.
A: Yes, Yuanyide’s DOS blends very well with PVC and PU (Polyurethane). It is insoluble in water but soluble in most organic solvents and oils, but its build lets it join polymer bases smoothly. This brings low loss to the air and strong light hold.
A: Yuanyide’s DOS has a better clean level (≥99.5%) and a high flash point (≥215°C). These give safer and stronger work in warm spots. Also, our DOS slips well when hot, aiding a better look and feel for the finished plastic or rubber goods.
A: DOS works by dropping the stiff point of the polymer. Thus, it stays soft and fights cracks in below-zero spots. This makes it a standard heat-tough plasticizer picked for cold jobs where basic ones like Dioctyl phthalate (DOP) could give out.
A: Yes, we offer a Sample Order service for buyers who wish to check our good quality first. We also offer skilled tech help to guide you to the right plasticizer for your exact needs.
The company adheres to the core concept of "customer-oriented, quality-oriented, excellence-oriented, and innovation-oriented", provides the market with cost-effective high-quality products with full passion, and promises first-class corporate services with honest faith. Continuously innovate and strive to become a permanent partner of customers.
