CAS 103-23-1 · Adipate Ester Plasticizer
Dioctyl Adipate
DOA / DEHA · C₂₂H₄₂O₄ · MW 370.57 g/mol
A high-performance adipate ester plasticizer prized for its outstanding low-temperature flexibility, wide liquid range, and FDA-approved food-contact status. DOA is the go-to plasticizer for PVC applications that must remain flexible in cold environments — from automotive wire insulation and refrigerator gaskets to food-wrap films and Arctic-grade cables. CFPT supplies DOA in drums, totes, and bulk.
Formula
C₂₂H₄₂O₄
Pour Point
−67.8 °C
Flash Point
196 °C
Pack Sizes
Drums · Totes · Bulk
Structural Formula
Adipic acid diester — two 2-ethylhexyl groups flanking a (CH₂)₄ chain
Safety & Regulatory
- NFPA Health
- 1 — Slight hazard
- NFPA Flammability
- 1 — Slight hazard
- NFPA Reactivity
- 0 — Stable
- OSHA PEL (TWA)
- Not established
- ACGIH TLV (TWA)
- Not established
- DOT Hazard Class
- Not regulated
- UN Number
- Not assigned
- Packing Group
- N/A
- FDA Status
- 21 CFR 181.27 — food-contact use permitted
SDS available upon request.
Grades & Packaging
Available Grades
Pack Sizes
Physical & Chemical Properties
| Molecular Formula | C₂₂H₄₂O₄ |
| Molecular Weight | 370.57 g/mol |
| CAS Number | 103-23-1 |
| Appearance | Clear, colorless to pale yellow oily liquid |
| Boiling Point | 214 °C (417 °F) at 5 mmHg; ~417 °C at 760 mmHg |
| Melting Point | −67.8 °C (−90 °F) |
| Flash Point | 196 °C (385 °F) — Combustible liquid |
| Density | 0.922–0.927 g/cm³ at 20 °C |
| Vapor Pressure | <0.01 mmHg at 20 °C |
| Solubility in Water | Practically insoluble (<0.1 mg/L at 25 °C) |
| Viscosity | ~13–15 mPa·s at 20 °C |
| Refractive Index | 1.446–1.450 at 20 °C |
Industrial Applications
Low-Temperature PVC Plasticization
Primary plasticizer for PVC and vinyl compounds requiring flexibility at sub-zero temperatures. DOA's exceptionally low glass transition contribution makes it the standard choice for automotive wire insulation, refrigerator gaskets, cold-weather hoses, and Arctic-grade cable jacketing.
Synthetic Rubber & Elastomers
Plasticizer and processing aid for nitrile rubber (NBR), neoprene, and chlorinated polyethylene. DOA improves low-temperature flexibility, reduces hardness, and enhances elongation in seals, gaskets, and molded rubber components.
Food-Contact Films & Packaging
Approved plasticizer for food-contact PVC films and wraps (FDA 21 CFR 181.27). DOA's low volatility and migration resistance make it suitable for stretch wrap, meat packaging, and produce films where direct food contact is required.
Coatings & Lacquers
Secondary plasticizer and coalescent in nitrocellulose lacquers, acrylic coatings, and specialty varnishes. Improves film flexibility, cold-crack resistance, and adhesion to flexible substrates including leather, fabric, and foil.
Adhesives & Sealants
Plasticizing component in solvent-based and hot-melt adhesives for flexible packaging, bookbinding, and automotive interior assembly. DOA improves peel strength, tack retention at low temperatures, and long-term flexibility of bonded assemblies.
Lubricants & Functional Fluids
Base fluid and additive in synthetic lubricants, hydraulic fluids, and dielectric oils. DOA's wide liquid range (−68 °C to >200 °C), low pour point, and good oxidative stability make it suitable for aerospace, military, and industrial fluid applications.
Why Source DOA from CFPT?
- 35+ years supplying plasticizers and specialty chemicals to Texas industry
- Industrial and Technical grades stocked for immediate delivery
- Flexible packaging from 55-gal drums to bulk tanker
- Competitive pricing backed by top-tier producer relationships
- Technical support, SDS documentation, and FDA compliance guidance
- Same-day quotes for standard quantities