Description

4,4'-Thiobis(6-tert-Butyl-m-Cresol) is a highly effective phenolic antioxidant widely used to inhibit oxidative degradation and extend the service life of various materials. Its primary value lies in its ability to function as a primary antioxidant, effectively scavenging free radicals to prevent chain propagation reactions that lead to material breakdown. This compound is essential for manufacturers in the polymer, rubber, lubricant, and adhesive industries seeking to enhance product stability and durability under demanding conditions.

Application

• Primary antioxidant in polyolefins (e.g., polyethylene, polypropylene) for films, fibers, and molded articles.
• Stabilizer for synthetic rubbers (e.g., SBR, NBR) and elastomers in automotive and industrial goods.
• Additive in industrial lubricants, greases, and transformer oils to prevent oxidation and sludge formation.
• Stabilizing agent in hot-melt and pressure-sensitive adhesives to maintain performance.
• Antioxidant in petroleum-based products like fuels and waxes.
• Intermediate in the synthesis of other specialty chemical additives.

Basic Information

Product Name	4,4'-Thiobis(6-tert-Butyl-m-Cresol)
CAS No.	96-69-5
Molecular Formula	C22H30O2S
Molecular Weight	358.54 g/mol
Synonyms	4,4'-Thiobis(2-tert-butyl-5-methylphenol); Antioxidant 300; AO 300; Santonox R; 2,2'-Thiobis(6-tert-butyl-4-methylphenol); Bis(2-tert-butyl-4-methyl-6-hydroxyphenyl) sulfide; 4-Methyl-2,6-di-tert-butylphenol sulfide
EINECS	202-525-2

Quality Control

Our production of 4,4'-Thiobis(6-tert-Butyl-m-Cresol) adheres to stringent quality management protocols. Each batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, appearance, and performance. Certificates of Analysis (COA) documenting these results are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Under these conditions, the product remains stable for extended periods.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Melting Point	160 - 165 °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.