Description

2,2'-Dihydroxy-3,3'-Di-tert-Butyl-5,5'-Dimethoxydiphenyl is a high-purity, hindered phenolic compound that serves as a highly effective antioxidant and stabilizer. Its molecular structure provides superior performance in protecting polymers and other materials from oxidative degradation and thermal stress. This product is essential for manufacturers in the plastics, rubber, and specialty chemical industries seeking to enhance the longevity and durability of their formulations.

Application

• Polymer Stabilizer: A 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 industrial lubricants, greases, and fuel systems to inhibit oxidation, reduce sludge formation, and extend service life.
• Adhesive & Sealant Formulations: Enhances the thermal stability and prevents premature aging of hot-melt adhesives, sealants, and coatings.
• Elastomer Protection: Provides critical antioxidant protection for synthetic rubbers like SBR, NBR, and EPDM in automotive and industrial applications.
• UV Stabilizer Synergist: Often used in combination with HALS (Hindered Amine Light Stabilizers) or UV absorbers to provide comprehensive light stabilization in plastics.
• Specialty Chemical Intermediate: Serves as a key building block for synthesizing more complex antioxidant molecules and performance additives.

Basic Information

Product Name	2,2'-Dihydroxy-3,3'-Di-tert-Butyl-5,5'-Dimethoxydiphenyl
CAS No.	14078-41-2
Molecular Formula	C26H38O4
Molecular Weight	414.58 g/mol
Synonyms	2,2'-Methylenebis(6-tert-butyl-4-methylphenol) (common misnomer/related compound); Antioxidant 2246; AO 2246; 2,2'-Dihydroxy-3,3'-di-tert-butyl-5,5'-dimethoxy-1,1'-biphenyl; Bis(3-tert-butyl-5-methoxy-2-hydroxyphenyl)methane (structural descriptor); Phenolic Antioxidant 2246; 4,4'-Methylenebis(2,6-di-tert-butylphenol) derivative; Low-volatility phenolic antioxidant.
EINECS	Contact for details

Quality Control

Our production of 2,2'-Dihydroxy-3,3'-Di-tert-Butyl-5,5'-Dimethoxydiphenyl adheres to stringent quality management systems. Every batch undergoes rigorous analytical testing to ensure consistent purity, performance, and compliance with industry specifications. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles 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 room temperature (15-25°C). Keep away from strong oxidizing agents and heat sources. The product is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	155°C - 165°C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1%

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