Description

Phenol, 4,4-Dithiobis2-(1,1-Dimethylethyl)-5-Methyl- is a specialized phenolic antioxidant and sulfur-containing compound, valued for its dual functionality in inhibiting oxidative degradation and acting as a radical scavenger. This chemical is critical for enhancing the longevity and stability of materials exposed to heat, light, and oxygen. It is primarily sought by formulators and manufacturers in the polymer, rubber, and specialty lubricant industries who require high-performance additive packages.

Application

• Polymer Stabilizer: A key antioxidant and metal deactivator in polyolefins (e.g., polyethylene, polypropylene) to prevent thermal and oxidative degradation during processing and end-use.
• Rubber Industry: Used as an anti-aging agent in synthetic rubber and elastomer formulations to maintain elasticity and prevent cracking.
• Lubricant & Grease Additive: Functions as an antioxidant in industrial lubricants and synthetic oils to extend service life and reduce sludge formation.
• Adhesive & Sealant Formulations: Enhances the shelf-life and thermal stability of hot-melt and pressure-sensitive adhesives.
• Fuel & Petrochemical Additive: Acts as a stabilizer in fuels and hydrocarbon streams to inhibit gum and sediment formation.
• Intermediate for Specialty Chemicals: Serves as a building block in the synthesis of more complex antioxidants and polymer additives.

Basic Information

Product Name	Phenol, 4,4-Dithiobis2-(1,1-Dimethylethyl)-5-Methyl-
CAS No.	2664-38-2
Molecular Formula	C22H30O2S2
Molecular Weight	390.60 g/mol
Synonyms	4,4'-Thiobis(2-tert-butyl-5-methylphenol); 2,2'-Thiobis(6-tert-butyl-4-methylphenol); Antioxidant 300; Lowinox® 44B25; Santonox® R; 2,2'-Thiobis(4-methyl-6-tert-butylphenol); Bis(2-tert-butyl-4-methyl-6-hydroxyphenyl) sulfide; 4-Methyl-2,6-di-tert-butylphenol sulfide
EINECS	220-202-8

Quality Control

Our production of Phenol, 4,4-Dithiobis2-(1,1-Dimethylethyl)-5-Methyl- adheres to stringent quality management protocols. Every batch is analyzed to ensure it meets precise specifications for identity, purity, and performance. Certificates of Analysis (COA) documenting key parameters such as assay, melting point, and impurity profiles 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, sparks, and open flame. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0 %
Melting Point	160 - 165 °C
Loss on Drying	≤ 0.5 %
Sulfur Content	Conforms to theoretical

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