Description

4,4'-(Disulfanediyl)Bis(2,6-Di-tert-Butylphenol) is a high-performance phenolic antioxidant and sulfur-containing compound. It matters as a critical stabilizer that effectively inhibits oxidative degradation and extends the service life of polymers and other sensitive materials. This product is essential for manufacturers in the polymer, rubber, and lubricant industries who require reliable protection against thermal and oxidative stress.

Application

• Primary antioxidant and stabilizer in polyolefins (e.g., polyethylene, polypropylene).
• Key additive in synthetic rubber and elastomers to prevent aging and maintain flexibility.
• Stabilizing component in lubricating oils, greases, and industrial fluids to enhance oxidative stability.
• Intermediate in the synthesis of more complex antioxidant systems and specialty chemicals.
• Protective additive in adhesives, sealants, and coatings to improve durability.
• Used in fuel and petroleum product formulations to inhibit gum formation.

Basic Information

Product Name	4,4'-(Disulfanediyl)Bis(2,6-Di-tert-Butylphenol)
CAS No.	6386-58-9
Molecular Formula	C28H42O2S2
Molecular Weight	474.76 g/mol
Synonyms	Bis(2,6-di-tert-butyl-4-hydroxyphenyl) disulfide; 4,4'-Dithiobis(2,6-di-tert-butylphenol); Antioxidant 300; AO 300; 2,6-Di-tert-butyl-4-(2,6-di-tert-butyl-4-hydroxyphenyl)disulfanylphenol; Phenol, 4,4'-dithiobis[2,6-bis(1,1-dimethylethyl)-]; Santonox R
EINECS	228-983-6

Quality Control

Our production of 4,4'-(Disulfanediyl)Bis(2,6-Di-tert-Butylphenol) adheres to stringent quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise industry specifications. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to guarantee traceability and compliance.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place 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 product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0 %
Melting Point	150 - 155 °C
Loss on Drying	≤ 0.5 %
Residue on Ignition	≤ 0.1 %

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