Description

4,4'-Methylenebis(6-tert-Butyl-m-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 (PP, PE) and other polymers to prevent thermal-oxidative degradation during processing and end-use.
• Stabilizer for synthetic rubbers and elastomers, including SBR, NBR, and EPDM, 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 prevent gelation and maintain viscosity.
• Protective additive in petroleum-based products like fuels and waxes to improve oxidative stability.
• Used in the production of food-grade polymer packaging where regulatory-compliant stabilization is required.

Basic Information

Product Name	4,4'-Methylenebis(6-tert-Butyl-m-Cresol)
CAS No.	2872-08-4
Molecular Formula	C29H44O2
Molecular Weight	424.66 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-4-hydroxy-5-methylphenyl)methane; Santowhite Powder; NSC 3349; Vianol 2246
EINECS	220-719-9

Quality Control

Our production of 4,4'-Methylenebis(6-tert-Butyl-m-Cresol) adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. The material is routinely tested against established internal specifications, which typically include assay, melting point, and color. Certificates of Analysis (COA) documenting these results are provided with every 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 strong oxidizing agents and heat sources. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
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.