Description

Alpha,Alpha'-Bis(2-Hydroxy-3,5-Dinonylphenyl)-4-Nonyl-2,6-Xylenol is a high-molecular-weight phenolic antioxidant belonging to the hindered phenol class. This compound is engineered to provide exceptional long-term thermal and oxidative stability to polymers and other organic materials, preventing degradation and extending service life. It is a critical additive for manufacturers in the plastics, rubber, and specialty lubricant industries seeking to enhance the durability and performance of their products under demanding conditions.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal-oxidative degradation during processing and end-use.
• Lubricant & Fuel Additive: Used in synthetic lubricants, greases, and industrial oils to inhibit oxidation, reduce sludge formation, and extend oil drain intervals.
• Adhesive & Sealant Formulations: Enhances the shelf-life and thermal stability of hot-melt adhesives, sealants, and other polymer-based formulations.
• Elastomer Protection: Provides antioxidant protection for styrene-butadiene rubber (SBR), nitrile rubber (NBR), and other elastomers against cracking and loss of elasticity.
• Wire & Cable Insulation: Stabilizes the polyethylene and cross-linked polyethylene (XLPE) used in insulation to prevent embrittlement from heat and oxygen exposure.
• Masterbatch Production: A key active component in antioxidant and stabilizer concentrate masterbatches for simplified and uniform dispersion in polymers.

Basic Information

Item	Details
Product Name	Alpha,Alpha'-Bis(2-Hydroxy-3,5-Dinonylphenyl)-4-Nonyl-2,6-Xylenol
CAS No.	64131-28-8
Molecular Formula	C59H96O3
Molecular Weight	853.4 g/mol
Synonyms	4-Nonyl-2,6-bis(2-hydroxy-3,5-dinonylbenzyl)phenol; Bis(2-hydroxy-3,5-dinonylphenyl)-4-nonyl-2,6-xylenol; Antioxidant 1790; Irganox 1790; AO-1790; Phenolic antioxidant 1790; 2,6-Bis[[3-(nonyl)-2-hydroxy-5-(1,1,3,3-tetramethylbutyl)benzyl]-4-(1,1,3,3-tetramethylbutyl)phenol (common trade name variant)
EINECS	Contact for details

Quality Control

Our production of Alpha,Alpha'-Bis(2-Hydroxy-3,5-Dinonylphenyl)-4-Nonyl-2,6-Xylenol adheres to a strict quality management system. Every batch is analyzed 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, well-ventilated area at room temperature (15-25°C). Due to its nature as an easily oxidized compound, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term storage to maintain maximum efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0 %
Melting Point	95 - 105 °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.