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Aslan In low-temperature environments, many PVC products may experience reduced flexibility and increased brittleness due to restricted polymer chain mobility. For manufacturers of agricultural films, wire and cable materials, and automotive interiors, maintaining flexibility at low temperatures is essential for product durability, processing reliability, and long-term performance. As a skilled producer focused on DPHP, DOTP, TOTM, DOA, and DOS, we have watched the sector change. In this guide, we will look into why the global market still relies so much on DOA Plasticizer (Dioctyl Adipate).
Bis(2-ethylhexyl) adipate (Di(2-ethylhexyl) adipate), commonly known as DOA or DEHA (CAS No. 103-23-1), is an adipate ester derived from 2-ethylhexanol and adipic acid. Unlike phthalate plasticizers, DOA is an adipate ester plasticizer commonly used when low-temperature flexibility is required. DOA belongs to the adipate group. Adipate plasticizers improve PVC flexibility by increasing free volume and reducing intermolecular interactions between PVC chains. It looks like a clear, colorless oily liquid with low odor. These properties make DOA suitable for applications requiring good transparency, low odor, and excellent low-temperature flexibility.
At Yuanyide, we manufacture a high-purity DOA that goes beyond basic factory needs.
| Property | Specification | Verification / Source |
| Product | DOA / Bis(2-ethylhexyl) adipate | TDS |
| CAS No. | 103-23-1 | TDS |
| Standard | HG/T 3873-2024 | Product specification |
| Ester content | ≥99.5% | TDS / COA |
| Acid value | ≤0.07 mgKOH/g | TDS / COA |
| Color | ≤20 | TDS / COA |
| Density | 0.924–0.929 g/cm³ | TDS / COA |
| Moisture | ≤0.1% | TDS / COA |
| Flash point | ≥190°C | TDS / COA |
Actual test results may vary by production batch. Buyers should verify the applicable values against the latest Yuanyide TDS and batch-specific COA. For handling and processing safety, refer to the SDS, equipment operating conditions, and applicable risk assessment.
As a global plasticizer supplier, Yuanyide provides products such as DOTP, TOTM, and DOA with relevant compliance documentation. For products supplied to regulated markets, buyers should verify applicable REACH requirements, RoHS restrictions, and SVHC Candidate List obligations based on the specific product, application, and destination market.
Polyvinyl Chloride (PVC) is a stiff polymer by nature. To make it bendable, we add plasticizers. DOA is commonly considered where improved low-temperature flexibility is required; actual performance depends on PVC grade, phr, co-plasticizer system, processing and test conditions.
However, most common plasticizers stop working well as the air gets colder. As temperature decreases below the effective glass transition range, PVC becomes less flexible and more prone to brittle failure. Yuanyide DOA specifically fixes this problem. It provides great toughness at low temperatures.
In fields like car making and outdoor building, materials face constant temperature swings. They grow in the heat and shrink in the cold. Without a strong cold-resistant tool like DOA, these internal forces cause tiny cracks. With proper formulation and application-specific testing, Yuanyide DOA can help maintain dimensional stability and impact resistance of PVC products under low-temperature and fluctuating-temperature conditions.
DOA performs effectively due to its flexible adipate structure, which improves polymer chain mobility and increases free volume within the PVC matrix. This improves segmental mobility of PVC chains under low-temperature conditions.
By lowering the glass transition temperature (Tg) of PVC formulations, DOA helps maintain flexibility and mechanical performance at low temperatures. It stays this way at temperatures where other items would break.
One common use for our DOA is making PVC cold-resistant films. These films are used a lot in farming to shield crops. Our DOA improves flexibility retention of PVC films under low-temperature conditions. This helps reduce the risk of cracking during low-temperature service conditions.
DOA is used in selected wire and cable formulations where improved low-temperature flexibility is required. These parts must stay bendable during winter setups. Yuanyide DOA provides the needed cold-weather flexibility. This prevents the coating from cracking, which could lead to risky short circuits or power outages.
Outside of PVC, DOA is a key part of the synthetic rubber world. It serves as a cold-weather softener for glues, seals, and rubber parts like tires. In the rubber field, DOA gives items great softness. It also helps the manufacturing process by acting as a lubricant.
DOA may be used in certain food-contact PVC applications where permitted by applicable regulations and formulation requirements. It offers high clarity and low risk. This keeps packaging safe for people while giving it the stretch and seal needed to keep food fresh.
| Property | DOA | DOTP | DOS |
| Chemical Type | Adipate ester | Terephthalate ester | Sebacate ester |
| Main Advantage | Low-temperature flexibility | Balanced performance | Low volatility and cold resistance |
| Migration Resistance | Moderate | High | High |
| Typical Applications | Cold-resistant PVC products | General flexible PVC | High-performance cold applications |
Note: The “Moderate” and “High” migration-resistance ratings represent general industry positioning, not a product guarantee. Actual performance may vary depending on PVC grade, plasticizer dosage (phr), formulation, temperature, contact medium, and test method.
DOTP (Dioctyl Terephthalate) is a non-phthalate plasticizer commonly considered for general-purpose PVC applications. It offers good electrical insulation-related performance and a balanced combination of durability and migration resistance. Compared with DOTP, DOA generally provides better low-temperature flexibility, while DOTP may offer a more balanced performance profile for general-purpose applications. DOTP can be considered as a primary plasticizer, while DOA may be evaluated in formulations where improved low-temperature flexibility is required. The appropriate plasticizer ratio should ultimately be determined through formulation testing and specific performance requirements.
DOS (Dioctyl Sebacate) is another high-performance plasticizer used for applications requiring excellent low-temperature flexibility and low volatility. DOS has slightly lower evaporation rates. However, DOA is often picked because it costs less. It also offers great resistance to water and light in many everyday uses.
For demanding PVC applications requiring enhanced durability, low volatility, and improved plasticizer retention, Yuanyide offers DOS-1 (HHOS) as a high-performance plasticizer solution. This high-carbon structure offers even lower movement and greater durability. Interestingly, HHOS can be mixed with DOA. This combination can provide a balanced performance profile, including flexibility, durability, and volatility control.
Picking the right additive needs a balance of three points:
Choosing a low-temperature PVC plasticizer requires more than checking the lowest working temperature. Buyers should provide the following information when evaluating DOA, DOS, or blended plasticizer options:
For example, DOA or DOS may be considered when low-temperature flexibility is a priority, while a blend with DOTP, TOTM, or DPHP may be evaluated when other requirements such as migration, volatility, or heat resistance also need to be balanced. The final plasticizer type and ratio should be confirmed through formulation testing under the actual application conditions.
Yuanyide is a professional plasticizer manufacturer with experience in developing and supplying PVC plasticizer solutions. Our site in the Circular Economy Park of She County spans 21,845 square meters. It holds six modern, automated lines for production.
In the world of plastics, unique problems need unique answers. General plasticizers are useful, but the special build of DOA plasticizer makes it vital for any PVC item used in cold spots. At Yuanyide, we combine 30 years of manufacturing skill with top testing technology. We provide high-purity DOA, DOTP, TOTM, and HHOS. These products help our clients build tougher, safer, and longer-lasting goods. Whether you make high-grade wires or green farm films, picking Yuanyide means choosing a partner devoted to quality and your future success.
Contact Yuanyide to request a DOA plasticizer sample and discuss your PVC formulation requirements, including low-temperature flexibility, migration resistance, and processing performance.
A: Yes, it is. DOA is one of the commonly used plasticizers for improving low-temperature flexibility in PVC and synthetic rubber applications. DOA is commonly evaluated to improve low-temperature flexibility; suitability for a specific outdoor product must be confirmed under the target formulation, temperature cycle and product standard.
A: In a PVC formulation, DOA helps increase the mobility between polymer chains, reducing stiffness and improving flexibility. This can help the material remain soft and flexible at low temperatures. However, final mechanical and low-temperature performance depends on the PVC formulation and plasticizer dosage and should be confirmed through application-specific testing.
A: Both offer cold resistance. However, DOA is very cost-effective. It also resists water and light well for common uses. DOS is usually for very special jobs that need even lower evaporation.
A: Basic PVC turns hard in the cold and can fail. DOA lowers the point where this happens. This ensures the material keeps its strength and rubbery feel during winter or in cold storage.
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.
