Description

2,2'-Methylenebis[4-tert-Butyl-3,6-Xylenol] is a high-performance phenolic antioxidant widely recognized for its excellent thermal and oxidative stability. This compound is critical for protecting polymers and other organic materials from degradation caused by heat, light, and oxygen during processing and service life. It is an essential additive for manufacturers in the plastics, rubber, and synthetic fiber industries seeking to enhance product durability and longevity.

Application

• Polymer Stabilization: Primary application as a highly effective antioxidant in polyolefins (PP, PE), polystyrene, and engineering plastics to prevent thermal-oxidative degradation.
• Rubber Industry: Used in the production of synthetic rubbers (SBR, BR, NBR) and latex to inhibit aging and maintain elasticity and mechanical properties.
• Adhesives & Sealants: Incorporated into hot-melt adhesives, pressure-sensitive adhesives, and sealants to improve their resistance to heat and oxidative breakdown.
• Synthetic Fibers: Acts as a stabilizer in the manufacture of polyamide and polyester fibers to protect against degradation during high-temperature spinning processes.
• Lubricants & Greases: Serves as an antioxidant additive in industrial lubricants and greases to extend their operational life by preventing oil thickening and deposit formation.
• Fuel & Petrochemical Additives: Used as a stabilizer in fuels and certain petrochemical intermediates to prevent gum and sediment formation.

Basic Information

Product Name	2,2'-Methylenebis[4-tert-Butyl-3,6-Xylenol]
CAS No.	94021-14-4
Molecular Formula	C29H44O2
Molecular Weight	424.66 g/mol
Synonyms	2,2'-Methylenebis(6-tert-butyl-4-methylphenol); Antioxidant 2246; AO 2246; MBTBX; Bis(3-tert-butyl-2-hydroxy-5-methylphenyl)methane; 4,4'-Methylenebis(2-tert-butyl-6-methylphenol); Lowinox® 22M46; Ethanox® 2246; Santowhite® MBPC
EINECS	Contact for details

Quality Control

Our production of 2,2'-Methylenebis[4-tert-Butyl-3,6-Xylenol] adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Every lot is analyzed against comprehensive specifications using advanced techniques like HPLC and GC. Certificates of Analysis (COA) documenting identity, purity, and key physical parameters are provided with each shipment to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized (store under inert atmosphere) and light-sensitive (store away from light). Keep away from strong oxidizing agents. For long-term storage, consider packaging under an inert gas such as nitrogen.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0 %
Melting Point	120 - 125 °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.