Description

6,6'-Methylenebis(4-tert-Butyl-o-Cresol) is a high-performance phenolic antioxidant widely recognized for its effectiveness in preventing oxidative degradation. This compound is critical for extending the service life and maintaining the physical properties of materials exposed to heat and oxygen. It is an essential additive for manufacturers in the polymer, rubber, and lubricant industries seeking to enhance product stability and durability.

Application

• Primary antioxidant in polyolefins (e.g., polyethylene, polypropylene) to prevent thermal-oxidative degradation during processing and end-use.
• Stabilizer for synthetic rubbers and elastomers, including styrene-butadiene rubber (SBR) and polybutadiene, to retain elasticity and prevent cracking.
• Additive in lubricating oils, greases, and hydraulic fluids to inhibit oxidation and sludge formation, extending fluid life.
• Stabilizing agent for adhesives, sealants, and hot-melt formulations to ensure consistent performance and shelf life.
• Protective additive in petroleum-based products like fuels and waxes to prevent gum and sediment formation.
• Used in the production of food-grade polymers and packaging materials where non-staining, low-volatility antioxidants are required.

Basic Information

Product Name	6,6'-Methylenebis(4-tert-Butyl-o-Cresol)
CAS No.	3634-86-4
Molecular Formula	C23H32O2
Molecular Weight	340.50 g/mol
Synonyms	2,2'-Methylenebis(6-tert-butyl-4-methylphenol); Antioxidant 2246; MBMC; AO 2246; 4,4'-Methylenebis(2-tert-butyl-5-methylphenol); Bis(3-tert-butyl-2-hydroxy-5-methylphenyl)methane; Vulkanox BKF; Lowinox 22M46; Santowhite PC
EINECS	222-878-7

Quality Control

Our production of 6,6'-Methylenebis(4-tert-Butyl-o-Cresol) adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, color, and melting point. Certificates of Analysis (COA) documenting these results are provided to guarantee supply consistency and product reliability for your formulations.

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. Due to its light-sensitive nature, prolonged exposure to direct light should be avoided.

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 %
Color (APHA)	≤ 100

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