Description

Antioxidant 1520 is a high-performance, hindered phenolic antioxidant widely recognized for its exceptional stabilizing properties. It is critical for preventing oxidative degradation and extending the service life of polymers and synthetic materials. This product is essential for manufacturers in the plastics, rubber, and coatings industries seeking to enhance product durability and performance under demanding conditions.

Application

• Primary antioxidant for polyolefins (PP, HDPE, LDPE) to prevent thermal-oxidative degradation during processing and end-use.
• Stabilizer for engineering plastics, styrenics (PS, ABS, SAN), and elastomers to maintain mechanical properties and color.
• Additive in adhesive and sealant formulations to improve shelf-life and long-term bonding performance.
• Protective agent for synthetic fibers and textiles to prevent strength loss from heat and light exposure.
• Stabilizing component in lubricants, greases, and hydraulic fluids to inhibit oil oxidation and sludge formation.
• Used in food-contact polymer applications where regulatory compliance for non-food migration is required.
• Synergistic component in stabilization packages with phosphites or thioesters for enhanced performance.

Basic Information

Product Name	Antioxidant 1520
CAS No.	110553-27-0
Molecular Formula	C29H44O3
Molecular Weight	440.66 g/mol
Synonyms	2,4-Bis(octylthio)-6-(4-hydroxy-3,5-di-tert-butylanilino)-1,3,5-triazine; 6-(3,5-Di-tert-butyl-4-hydroxyphenylamino)-2,4-bis(octylthio)-1,3,5-triazine; Antioxidant 1520; Irganox 1520; Anox 20; Lowinox 22M46; AO 1520; Phenolic antioxidant 1520; Tris(3,5-di-tert-butyl-4-hydroxyphenyl) isocyanurate (common mis-association, clarify)
EINECS	Contact for details

Quality Control

Our Antioxidant 1520 is manufactured under a strict quality management system. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters are provided to guarantee consistency and support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Under these conditions, the product maintains its specified properties.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0 %
Melting Point	91 - 96 °C
Loss on Drying	≤ 0.5 %
Ash Content	≤ 0.1 %

Note: Specifications can be tailored. Please contact us for the detailed technical data sheet of a specific grade.