Description

Antioxidant 1024 is a high-performance, phenolic phosphite secondary antioxidant widely used to prevent thermal and oxidative degradation in polymers. Its dual functionality provides exceptional long-term stability and color retention, making it a critical additive for maintaining material integrity under demanding conditions. This product is essential for manufacturers in the plastics, synthetic fiber, and rubber industries seeking to enhance the durability and lifespan of their products.

Application

• Primary stabilizer in polyolefins (PP, HDPE, LDPE) to prevent thermal degradation during processing.
• Key additive in engineering plastics (polyamide, polyester) for long-term heat aging resistance.
• Stabilizer for synthetic fibers to maintain tensile strength and color during high-temperature extrusion.
• Protective agent in elastomers and rubber compounds to prevent cracking and embrittlement.
• Used in adhesives and sealants formulations to improve shelf-life and performance stability.
• Effective stabilizer for hot melt adhesives and other thermoplastic applications.
• Synergistic component in polymer stabilization systems combined with primary antioxidants (e.g., hindered phenols).

Basic Information

Product Name	Antioxidant 1024
CAS No.	32687-78-8
Molecular Formula	C34H51O6P
Molecular Weight	586.75 g/mol
Synonyms	Bis(2,4-di-tert-butylphenyl) pentaerythritol diphosphite; Irgafos 126; Doverphos S-9228; Ultranox 626; Phosphite antioxidant 626; Pentaerythritol bis(2,4-di-tert-butylphenyl) phosphite; 3,9-Bis(2,4-di-tert-butylphenoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane
EINECS	251-158-5

Quality Control

Our Antioxidant 1024 is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, performance, and consistency. Certificates of Analysis (COA) documenting key parameters such as assay, melting point, and phosphite content are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at 15-25°C. This product is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Melting Point	175 - 185 °C
Phosphorus Content	10.5 - 11.0 %
Volatile Matter	≤ 0.5 %
Solution Color (APHA)	≤ 50

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