Dioctyldiphenylamine (CAS#101-67-7) is a high-efficiency aromatic amine-based antioxidant widely applied in rubber, polymer and lubricant industrial fields. The product appears as fine white powder or light beige solid with a very slight characteristic amine odor, featuring uniform particle distribution, high purity and stable physical properties under normal storage conditions. It possesses excellent high-temperature oxidation resistance and outstanding thermal aging protection performance, making it one of the most classic and reliable non-discoloring primary antioxidants for high-temperature formulation systems.
Unlike conventional phenolic antioxidants, Dioctyldiphenylamine maintains stable anti-oxidation activity under prolonged heat exposure, effectively inhibiting thermal degradation, molecular chain breakage, viscosity increase and material embrittlement caused by continuous oxidation. It significantly improves the thermal stability and service durability of finished products, greatly extending the service life of synthetic rubber, elastomers, industrial lubricating oils and various polymer materials. In practical industrial applications, the product shows excellent compatibility with rubber substrates, base oils and other auxiliary additives, ensuring uniform dispersion without precipitation, blooming or surface discoloration.
In addition, Dioctyldiphenylamine exhibits superior resistance to thermal oxidative aging under harsh working conditions such as high temperature, high load and long-cycle operation. It is widely used in the production of rubber hoses, sealing parts, rubber belts, mechanical elastomer products, as well as high-temperature industrial lubricants and grease formulations. With stable quality, mature application technology and cost-effective performance, it has become a mainstream anti-aging additive for global industrial material manufacturing and high-temperature lubrication systems.
Dioctyldiphenylamine Chemical Properties |
Melting point | 96-97°C |
Boiling point | 508.06°C (rough estimate) |
density | 1.0937 (rough estimate) |
refractive index | 1.9470 (estimate) |
storage temp. | -20°C Freezer |
solubility | DMSO: Sparingly soluble: 1-10 mg/mL |
pka | 1.61±0.50(Predicted) |
form | Solid |
Water Solubility | <0.1 g/100 mL at 21 ºC |
Stability: | Stable. Combustible. Incompatible with strong oxidizing agents. |
InChI | InChI=1S/C28H43N/c1-3-5-7-9-11-13-15-25-17-21-27(22-18-25)29-28-23-19-26(20-24-28)16-14-12-10-8-6-4-2/h17-24,29H,3-16H2,1-2H3 |
InChIKey | QAPVYZRWKDXNDK-UHFFFAOYSA-N |
SMILES | C1(NC2=CC=C(CCCCCCCC)C=C2)=CC=C(CCCCCCCC)C=C1 |
CAS DataBase Reference | 101-67-7(CAS DataBase Reference) |
NIST Chemistry Reference | Diphenylamine, 4,4'-dioctyl-(101-67-7) |
EPA Substance Registry System | 4,4'-Dioctyldiphenylamine (101-67-7) |
Safety Information |
Risk Statements | 20/21/22 |
Safety Statements | 26-36/37/39 |
TSCA | TSCA listed |
Hazardous Substances Data | 101-67-7(Hazardous Substances Data) |
Product Application of Dioctyldiphenylamine (CAS#101-67-7)
Dioctyldiphenylamine, also known as Bis(4-octylphenyl)amine, is a high-performance industrial antioxidant additive widely used in polymer and rubber industries. It is primarily applied in the formulation and manufacturing of plasticized neoprene rubber compounds, effectively improving the material’s thermal stability, anti-aging performance and oxidation resistance during long-term service. This ingredient efficiently inhibits thermal degradation and oxidative deterioration of rubber products, ensuring stable physical properties and extending the overall service life of finished rubber materials.
Delivery Information
In-stock products can be shipped within 2–3 working days. For newly produced bulk orders, the production and delivery cycle takes 7–10 working days.
