Description

2,5-Bis(1,1-Dimethylbutyl)-4-Methoxyphenol is a sterically hindered phenolic antioxidant, a chemical class renowned for its ability to inhibit oxidative degradation in various materials. This compound matters for its high-performance stabilization properties, offering superior protection against thermal and oxidative stress in demanding environments. It is primarily needed by manufacturers in the polymer, rubber, and specialty lubricant industries seeking to extend product lifespan and maintain material integrity.

Application

• Primary antioxidant in polyolefins (e.g., polyethylene, polypropylene) for films, fibers, and molded articles.
• Stabilizer for synthetic rubbers and elastomers to prevent chain scission and cross-linking during processing and service.
• Additive in lubricating oils, greases, and hydraulic fluids to enhance oxidative stability and reduce sludge formation.
• Stabilizing agent for adhesives, sealants, and other polymer-based formulations.
• Intermediate in the synthesis of more complex, high-molecular-weight hindered phenol antioxidants.
• Protective agent in fuel additives to prevent gum and deposit formation.

Basic Information

Product Name	2,5-Bis(1,1-Dimethylbutyl)-4-Methoxyphenol
CAS No.	76434-12-3
Molecular Formula	C₂₂H₃₈O₂
Molecular Weight	334.54 g/mol
Synonyms	2,5-Bis(1,1-dimethylpentyl)-4-methoxyphenol; 4-Methoxy-2,5-bis(1,1-dimethylpentyl)phenol; Antioxidant 736; Phenol, 2,5-bis(1,1-dimethylpentyl)-4-methoxy-; Bis(1,1-dimethylpentyl)-4-methoxyphenol; 2,5-Di-tert-pentyl-4-methoxyphenol; Ethanox® 736 (trade name); AO-736
EINECS	Contact for details

Quality Control

Our production of 2,5-Bis(1,1-Dimethylbutyl)-4-Methoxyphenol adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for assay and purity, to ensure it meets exacting specifications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory needs.

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, prolonged exposure to air should be minimized; for long-term storage, consider an inert atmosphere.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	95 - 105 °C
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm

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