Description

2,2'-Thiobis[6-tert-Butyl-3,4-Xylenol] is a high-performance phenolic antioxidant widely recognized for its excellent heat stability and low volatility. This compound is critical for preventing oxidative degradation and extending the service life of polymers and other sensitive materials. It is an essential additive for manufacturers in the plastics, rubber, and lubricant industries seeking to enhance product durability under demanding thermal conditions.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (e.g., PP, PE), polystyrene, and engineering plastics to prevent thermal-oxidative degradation during processing and long-term use.
• Rubber Industry: Used in the production of synthetic rubbers (SBR, BR) and latex to protect against heat aging and maintain elasticity.
• Lubricants & Greases: Antioxidant additive in industrial lubricants, transmission fluids, and synthetic oils to inhibit sludge formation and viscosity increase.
• Adhesives & Sealants: Enhances the thermal stability and shelf-life of hot-melt adhesives, pressure-sensitive adhesives, and various sealant formulations.
• Petroleum Products: Stabilizer for fuels, waxes, and other petroleum-derived products to prevent gum formation and oxidative degradation.
• Elastomers & Fibers: Protects synthetic fibers and elastomeric materials from UV and thermal-induced brittleness.

Basic Information

Product Name	2,2'-Thiobis[6-tert-Butyl-3,4-Xylenol]
CAS No.	84824-95-3
Molecular Formula	C22H30O2S
Molecular Weight	358.54 g/mol
Synonyms	2,2'-Thiobis(6-tert-butyl-3,4-dimethylphenol); Antioxidant 300; 6-tert-Butyl-2,4-dimethylphenol sulfide; 4,4'-Thiobis(2-tert-butyl-5-methylphenol); Bis(6-tert-butyl-3,4-dimethyl-2-hydroxyphenyl) sulfide; Lowinox® 300; Irganox® 1081; AO 300
EINECS	284-328-7

Quality Control

Our production of 2,2'-Thiobis[6-tert-Butyl-3,4-Xylenol] adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Every lot is tested against comprehensive specifications using advanced analytical techniques such as HPLC and GC. Certificates of Analysis (COA) detailing purity, identity, 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; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0 %
Melting Point	158 - 162 °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.