Heat, oxygen, and trace metals are a destructive trio for plastics, rubbers, and oils. They silently trigger chain reactions that lead to fading, brittleness, sludge, and premature failure. Combatting this requires more than a simple antioxidant—it demands an intelligent, multi-faceted defense system. Meet SINANOX® 703, a premium nitrogen-stabilized phenolic antioxidant engineered to deliver dual-action protection precisely where it’s needed most.
Unlike conventional additives that address only one degradation pathway, SINANOX® 703 is formulated to tackle both radical oxidation and metal-catalyzed breakdown simultaneously. This makes it an exceptionally efficient and reliable choice for extending the service life and maintaining the integrity of high-performance materials.
At its core, SINANOX® 703 (2,6-Di-tert-butyl-4-(dimethylaminomethyl)phenol,CAS NO 88-27-7) is a synergistic stabilizer. Its molecular architecture cleverly combines a robust hindered phenol group with an effective metal-chelating amine function. This design allows it to act as a persistent radical scavenger while neutralizing the damaging effects of contaminant metal ions like copper and iron—a common culprit in accelerated material degradation.
Product Profile:
Form: White to light yellow crystalline powder
Purity: Boasts a high purity level of over 99%
Thermal Resilience: Stable across a broad temperature range, with a melting point of 90-96°C.
Key Attributes: Non-staining, color-stable, low volatility, and recognized as safe for food-contact applications in regulated markets like Germany and Japan.
Dual-Action, Single-Additive Efficiency
Stop juggling multiple additives. SINANOX® 703 provides a two-in-one solution, offering superior antioxidant protection and powerful metal deactivation. This simplifies formulations, reduces costs, and ensures comprehensive defense against thermal-oxidative stress.
Guards Integrity Under Extreme Conditions
From the high shear and heat of polymer processing (e.g., extrusion, molding) to the relentless thermal demands of engine bays or industrial gearboxes, SINANOX® 703 maintains its protective efficacy. It ensures your products perform reliably, longer.
Preserves Appearance and Compliance
Its non-discoloring and non-staining nature is critical for applications where visual appeal matters—think consumer electronics housings, automotive interiors, or clear packaging. Its approval for food-contact uses underscores its high safety and purity standards.
Long-Lasting, “Stay-In-Place” Performance
Thanks to its low volatility and minimal migration, SINANOX® 703 remains within the material matrix throughout the product's lifecycle. This means protection doesn’t fade away, ensuring enduring performance and durability.
This versatile performer is a trusted solution across diverse sectors:
Rubber & Elastomers (Recommended: 0.1 - 0.5%):
Essential for tires, seals, and industrial belts, it prevents thermo-oxidative aging, cracking, and loss of elasticity, ensuring durability in demanding environments.
High-Performance Plastics:
Polyolefins (PP, PE): Stabilizes films, pipes, and automotive components during processing and in end-use, preventing degradation and embrittlement.
Engineering Resins (ABS, PS, Nylon): Enhances the long-term thermal stability and weather resistance of parts used in appliances, electronics, and automotive assemblies.
Fibers & Polyesters: Protects against polymer chain scission and yellowing, maintaining strength and appearance.
Lubricants & Functional Fluids:
A key defender in engine oils, gear oils, and industrial lubricants, it drastically reduces oxidative thickening, acid formation, and sludge deposits. This leads to extended drain intervals, cleaner engines, and protected machinery.
Available in: 25 kg cartons or drums.
Storage Advice: Keep in a cool, dry place in a tightly sealed container. Protect from direct moisture and heat sources.
Choosing SINANOX® 703 means opting for a smarter, more comprehensive approach to material stabilization. It’s the strategic advantage for formulators who will not compromise on quality, longevity, or performance—whether in a demanding plastic component, a critical rubber seal, or a high-stress lubricant.
