Technical Equivalence and Supply Security for Antioxidant 136
- Direct Chemical Equivalence: Matches 5,7-di-tert-butyl-3-(3,4-dimethylphenyl)-3H-benzofuran-2-one specifications for seamless integration.
- Validated Performance: Demonstrates superior oxidative induction time (OIT) and reduced extraction in polyolefin matrices.
- Reliable Bulk Supply: Consistent quality and logistics support from a premier global manufacturer.
In the realm of polymer stabilization, securing a reliable supply chain for critical additives is paramount for maintaining production continuity. Formulators seeking a robust drop-in replacement for legacy lactone stabilizers often require precise chemical matching to avoid costly reformulation cycles. Antioxidant 136 (CAS: 164391-52-0) represents a high-efficiency hindered phenolic lactone designed to deliver exceptional thermooxidative stability in polypropylene and polyethylene applications. As a premier global manufacturer, NINGBO INNO PHARMCHEM CO.,LTD. provides this essential stabilizer with rigorous quality control to ensure performance parity with established market standards.
Chemical Identity and Structural Performance
The efficacy of any stabilizer lies in its molecular structure. Antioxidant 136 is chemically defined as 5,7-di-tert-butyl-3-(3,4-dimethylphenyl)-3H-benzofuran-2-one. This benzofuranone derivative functions as a primary antioxidant, effectively capturing free radicals generated during polymer processing and end-use exposure. Unlike conventional stabilizers that may suffer from volatility or migration, this lactone-based structure offers a balanced profile of thermal stability and compatibility within non-polar polymer matrices.
Technical data indicates that this chemical class provides significant protection against thermooxidative degradation. When compared against conventional low molecular mass stabilizers, optimized formulations utilizing this benzofuranone structure exhibit comparable efficiency in extending the oxidative induction time (OIT) determined by DSC. This ensures that polyolefin products maintain their mechanical integrity over extended service lives, resisting embrittlement and surface cracking caused by thermal stress.
Formulation Compatibility and Processing Benefits
Transitioning to a new supplier requires confidence in processing behavior. Antioxidant 136 is engineered to function as a seamless drop-in replacement for standard lactone stabilizers such as Irganox HP-136. The physical properties, including melting point and solubility profiles, are calibrated to ensure easy dispersion during extrusion or compounding. This compatibility minimizes the risk of plate-out or die buildup, which are common issues when additive solubility limits are exceeded.
Furthermore, the stabilizer demonstrates excellent resistance to extraction. In applications where polymers are exposed to solvents or aqueous environments, low migration is critical. Hexane extraction tests on stabilized polyolefin matrices reveal negligible leaching of the active stabilizer component. This retention ensures long-term protection remains within the polymer bulk rather than migrating to the surface, thereby maintaining aesthetic quality and preventing contamination of contact media.
Recommended Application Areas
- Polypropylene (PP): Fibers, films, and injection molded parts requiring high thermal stability.
- Polyethylene (PE): Pipe grades and rotational molding compounds exposed to prolonged heat.
- Polyurethane Foams: Prevention of gas fading (NOx) and thermal discoloration during curing.
- Engineering Plastics: Compatible with polyesters and polyamides where yellowing resistance is critical.
Validation Testing Protocols
To guarantee consistency, every batch undergoes strict analytical verification. A comprehensive formulation guide should include validation against key performance benchmark metrics. The following table outlines typical specification parameters and performance outcomes expected from high-purity material supplied by NINGBO INNO PHARMCHEM CO.,LTD.
| Parameter | Specification | Test Method |
|---|---|---|
| Appearance | White to Off-White Powder | Visual |
| Purity (HPLC) | ≥ 98.0% | Internal Standard |
| Melting Point | 155°C - 160°C | DSC |
| Volatile Matter | ≤ 0.5% | Gravimetric (105°C) |
| OIT Retention (PP) | ≥ 95% of Standard | ASTM D3895 |
These metrics ensure that the material performs reliably under industrial processing conditions. For procurement teams evaluating supply chain risks, obtaining a current COA (Certificate of Analysis) is essential to verify these parameters against incoming shipments. Consistency in purity directly correlates to consistency in the final polymer product's color and mechanical properties.
Commercial Advantages and Supply Chain Stability
Beyond technical specifications, commercial viability dictates material selection. Sourcing from a dedicated chemical manufacturer offers advantages in bulk price stability and logistical support. NINGBO INNO PHARMCHEM CO.,LTD. maintains robust production capacity to meet large-scale demand fluctuations without compromising quality. This reliability is crucial for manufacturers operating just-in-time inventory systems where material shortages can halt production lines.
When sourcing high-purity Antioxidant 136, buyers should prioritize suppliers who can provide technical support alongside material supply. The ability to troubleshoot formulation issues, such as optimizing loading rates for specific resin grades, adds significant value. Typical loading rates range from 0.05% to 0.2% depending on the polymer type and processing severity, allowing for cost-effective stabilization without over-additization.
Conclusion
Securing a high-performance stabilizer requires a partner who understands both the chemistry and the commercial landscape. Antioxidant 136 offers a technically sound solution for manufacturers seeking to diversify their supply chain while maintaining product quality. With verified chemical identity, proven extraction resistance, and reliable manufacturing capabilities, it stands as a viable alternative for demanding polyolefin applications. By leveraging the technical expertise and production capacity of NINGBO INNO PHARMCHEM CO.,LTD., formulators can ensure consistent stabilization performance and long-term supply security.