Description

Bis(3,5-Di-T-Butyl-4-Hydroxybenzyl) Sulfide is a high-performance phenolic antioxidant and sulfur-containing secondary stabilizer. This compound is valued for its exceptional ability to inhibit oxidative degradation and provide long-term thermal stability to polymeric materials. It is primarily needed by manufacturers in the polymer, plastics, and rubber industries to protect their products from premature aging and failure.

Application

• Primary and synergistic antioxidant in polyolefins (PP, PE), engineering plastics, and synthetic rubbers.
• Thermal stabilizer for adhesives, sealants, and polymer dispersions to prevent gelation and maintain viscosity.
• Additive in lubricating oils and greases to enhance oxidative stability and extend service life.
• Stabilizing component in elastomers such as SBR, NBR, and EPDM for automotive and industrial parts.
• Used in food-grade polymer applications (where compliant) for packaging materials.
• Protective agent in hot-melt adhesives and coatings to prevent discoloration and embrittlement during processing.

Basic Information

Product Name	Bis(3,5-Di-T-Butyl-4-Hydroxybenzyl) Sulfide
CAS No.	1620-93-5
Molecular Formula	C30H46O2S
Molecular Weight	470.75 g/mol
Synonyms	4,4'-Thiobis(2,6-di-tert-butylphenol); 4,4'-Thiobis(2,6-di-tert-butylphenol); Antioxidant 300; Bis(3,5-di-tert-butyl-4-hydroxybenzyl) sulfide; 2,6-Di-tert-butyl-4-[(3,5-di-tert-butyl-4-hydroxyphenyl)thio]methyl]phenol; AO 300; CAS 1620-93-5; Phenol, 4,4'-thiobis[2,6-bis(1,1-dimethylethyl)-]
EINECS	216-602-5

Quality Control

Our Bis(3,5-Di-T-Butyl-4-Hydroxybenzyl) Sulfide is manufactured under a strict quality management system. Each batch undergoes rigorous analytical testing to ensure it meets high-purity standards and consistent performance for industrial applications. Certificates of Analysis (COA) documenting purity, melting point, and other critical parameters 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). Keep away from strong oxidizing agents. Under these conditions, the product has excellent shelf stability.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0 %
Melting Point	150 - 155 °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.