In modern polymer modification, outdoor vinyl processing, and automotive elastomer compounding, maintaining extreme flexibility under sub-zero thermal loads is a critical manufacturing milestone. Dioctyl Adipate (universally specified in international chemical sourcing as DOA or DEHA) stands as the ultimate industry benchmark for low-temperature, phthalate-free plasticization. Chemically identified as Bis(2-ethylhexyl) adipate (CAS No. 103-23-1), DOA is an aliphatic dicarboxylic acid ester produced as a water-white, low-viscosity clear liquid. Completely free of ortho-phthalate rings, DOA introduces maximum chain mobility into the polymer matrix, resulting in exceptional low-temperature shatter resistance and superior melt flow profiles during compounding.
Technical Product Specifications
| Property / Parameter | Standard Specification (Premium Grade) |
|---|---|
| Chemical Name | Bis(2-ethylhexyl) adipate (Dioctyl Adipate / DOA) |
| CAS Number | 103-23-1 |
| Molecular Formula | C22H34O4 |
| Ester Content / Active Purity (%) | ≥ 99.5% |
| Color (APHA / Pt-Co) | ≤ 20 max |
| Density (g/cm³ at 20°C) | 0.924 – 0.930 g/cm³ |
| Acidity (as Adipic Acid, %) | ≤ 0.01% |
| Flash Point (°C, Open Cup) | ≥ 190 °C |
Why Choose Our DOA Plasticizer?
- ✓ Extreme Cold-Temperature Performance: Lowers the glass transition temperature (Tg) of polymers far more effectively than phthalate esters, keeping compounds flexible down to -60°C without crack vulnerability.
- ✓ Fully Compliant Non-Phthalate Chemistry: Contains zero ortho-phthalate ring structures, ensuring seamless alignment with global regulatory protocols including EU REACH Annex XIV, US CA Prop 65, and FDA regulations.
- ✓ Optimized Melt Flow & Fast Solvation: Its low native viscosity provides outstanding internal lubrication for polymers, dramatically boosting pigment wetting, processing speeds, and compound tack characteristics.
Primary Applications
Phthalate-free DOA is universally formulated across flexible PVC sheets, polar synthetic rubbers, and specialty food-contact films:
Food-Grade Cling Films & Wraps
The industry global standard plasticizer for fresh food cling films, poly packaging coatings, and container gaskets demanding ultra-high transparency and low migration risk.
Nitrile (NBR) & CR Rubber Engineering
Extensively incorporated into specialty elastomers to reduce compound Mooney viscosity, ease extrusion pressure, and maximize sub-zero elasticity for marine and automotive hoses.
Cold-Climate Wire & Cable Hoses
Formulated into premium outdoor electrical jacketing insulation, garden hoses, cold-storage curtains, and automotive weatherstripping strips.
⚠ Storage & Handling Guidelines
Maintaining correct warehouse climate parameters is vital to protect the active ester purity and excellent water-white clarity of Dioctyl Adipate (DOA). Although it possesses outstanding chemical stability and a high flash point, its aliphatic ester structure can undergo slow hydrolysis if exposed to prolonged moisture tracks, impacting its acid value and performance metrics.
- • Warehouse Climate Control: Store all liquid drums, IBC totes, or bulk storage tanks within a thoroughly cool, dry, and well-ventilated dedicated warehouse footprint. Keep storage rows completely isolated from direct sunlight, open flames, steam pipes, or heating grids.
- • Airtight Sealing Management: Ensure all container bungs, valves, and caps are tightly resealed immediately after any dispensing or sampling operations. Keeping containers hermetically sealed prevents ambient humidity absorption and safeguards the low-acidity quality of the ester.
- • Shelf Life & Rotation Strategy: Under clean, temperature-controlled, and sealed environment parameters, our premium DOA plasticizer carries a certified shelf life of 24 months from the date of manufacture. Adhering to a strict First-In, First-Out (FIFO) material rotation system is recommended.
Frequently Asked Questions
What makes DOA uniquely suited for sub-zero low-temperature rubber applications? +
Can DOA be blended with other plasticizers like DOTP or TOTM? +
What is the standard recommended dosage range for DOA in polar synthetic rubbers? +
Partner with a Reliable Chemical Supplier
We provide premium-grade, phthalate-free Dioctyl Adipate (DOA) plasticizer carefully processed to meet international technical benchmarks. Available in high-purity liquid drums, IBC totes, and bulk ISO tanks to ensure absolute processing precision inside your polymer mixing environment.
