Description

4,4'-Methylenebis(6-tert-Butyl-2,3-Xylenol) is a high-performance phenolic antioxidant widely recognized for its excellent stabilizing properties. This compound is critical for preventing oxidative degradation and extending the service life of various polymeric materials and industrial fluids. It is an essential additive for manufacturers in the polymer, rubber, lubricant, and fuel industries seeking to enhance product durability and performance under demanding conditions.

Application

• Primary antioxidant and stabilizer in polyolefins (e.g., polyethylene, polypropylene) to prevent thermal and oxidative degradation during processing and end-use.
• Key additive in synthetic and natural rubber formulations to inhibit aging, maintain elasticity, and prevent cracking.
• Stabilizer component in lubricating oils, greases, and industrial fluids to reduce sludge formation and viscosity increase.
• Antioxidant for fuels and hydrocarbon-based products to improve storage stability and prevent gum formation.
• Stabilizing agent in adhesives, sealants, and other polymer-based systems to ensure long-term performance.
• Used in the production of high-performance plastics and engineering polymers requiring enhanced weatherability and heat resistance.

Basic Information

Product Name	4,4'-Methylenebis(6-tert-Butyl-2,3-Xylenol)
CAS No.	84604-88-6
Molecular Formula	C25H36O2
Molecular Weight	368.56 g/mol
Synonyms	2,2'-Methylenebis(6-tert-butyl-4-methylphenol); Antioxidant 2246; AO 2246; MBMBP; 2,2'-Methylenebis(4-methyl-6-tert-butylphenol); Bis(6-tert-butyl-2,3-dimethylphenyl)methane; 4,4'-Methylenebis(2-tert-butyl-5-methylphenol); Lowinox 22M46
EINECS	283-269-6

Quality Control

Our production of 4,4'-Methylenebis(6-tert-Butyl-2,3-Xylenol) adheres to stringent quality management protocols to ensure batch-to-batch consistency and reliability. The material is manufactured and tested to meet relevant industry specifications for antioxidant applications. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with each shipment to guarantee compliance with your technical requirements.

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. The product is light-sensitive and should be stored away from direct light exposure.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Melting Point	124 - 128 °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.