Description

2,2'-Thiobis(6-tert-Butyl-p-Cresol) is a highly effective sterically hindered phenolic antioxidant. This compound is critical for preventing oxidative degradation and extending the service life of polymers and hydrocarbon-based materials. It is essential for manufacturers in the rubber, plastics, lubricant, and adhesive industries who require reliable stabilization against heat and oxygen.

Application

• Rubber Industry: Primary antioxidant for synthetic rubbers (SBR, BR, NBR) and natural rubber to prevent chain scission and crosslinking during processing and in-service.
• Plastics & Polymers: Stabilizer for polyolefins (PP, PE), polystyrene, and polyvinyl chloride to inhibit thermal-oxidative degradation during extrusion and molding.
• Lubricants & Greases: Antioxidant additive in industrial and automotive lubricating oils, transmission fluids, and synthetic greases to reduce sludge formation and viscosity increase.
• Adhesives & Sealants: Used in hot-melt, pressure-sensitive, and elastomeric formulations to maintain adhesive properties and prevent embrittlement.
• Fuels & Hydrocarbons: Stabilizer for gasoline, jet fuels, and transformer oils to inhibit gum formation and acid generation.
• Food Contact Materials: Approved for use in certain polymer applications where regulatory compliance for indirect food contact is required.

Basic Information

Product Name	2,2'-Thiobis(6-tert-Butyl-p-Cresol)
CAS No.	90-66-4
Molecular Formula	C22H30O2S
Molecular Weight	358.54 g/mol
Synonyms	2,2'-Thiobis(6-tert-butyl-4-methylphenol); Antioxidant 2246; Butylated hydroxyanisole sulfide; 4,4'-Thiobis(2-tert-butyl-5-methylphenol); Santowhite Powder; AO 2246; Bis(2-hydroxy-3-tert-butyl-5-methylphenyl) sulfide; 2,2'-Thiobis(4-methyl-6-tert-butylphenol)
EINECS	202-006-7

Quality Control

Our production of 2,2'-Thiobis(6-tert-Butyl-p-Cresol) adheres to stringent quality management systems. Every batch is tested against comprehensive specifications to ensure consistent performance, high purity, and compliance with industry requirements. Certificates of Analysis (COA) documenting identity, assay, and impurity profiles are available upon request.

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, consider an inert atmosphere (nitrogen blanket). 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	80 - 85 °C
Loss on Drying	≤ 0.5 %
Ash Content	≤ 0.1 %
Heavy Metals (as Pb)	≤ 10 ppm

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