Description

Dithiobis[4-(1,1-Dimethylpropyl)Phenol] is a high-purity, sulfur-containing phenolic antioxidant. This compound is valued for its ability to act as a radical scavenger and peroxide decomposer, providing excellent thermal and oxidative stability to various materials. It is primarily utilized by formulators and manufacturers in the polymer, lubricant, and specialty chemical industries seeking to enhance product longevity and performance under demanding conditions.

Application

• Polymer Stabilizer: A key antioxidant and metal deactivator for polyolefins (e.g., polyethylene, polypropylene), synthetic rubbers, and engineering plastics to prevent thermal and oxidative degradation during processing and service life.
• Lubricant & Fuel Additive: Used in industrial lubricants, greases, and fuel formulations to inhibit oxidation, reduce sludge formation, and extend the operational life of machinery and engines.
• Adhesive & Sealant Component: Enhances the shelf-life and thermal stability of hot-melt adhesives, epoxy resins, and polyurethane systems.
• Elastomer Protection: Provides critical antioxidant protection in styrene-butadiene rubber (SBR), nitrile rubber (NBR), and other elastomers to maintain elasticity and prevent cracking.
• Coating Additive: Incorporated into protective coatings and paints to improve resistance to weathering, UV exposure, and thermal aging.
• Intermediate for Specialty Chemicals: Serves as a building block in the synthesis of more complex antioxidants and light stabilizers for high-performance applications.

Basic Information

Product Name	Dithiobis[4-(1,1-Dimethylpropyl)Phenol]
CAS No.	32074-74-1
Molecular Formula	C₂₂H₃₀O₂S₂
Molecular Weight	390.60 g/mol
Synonyms	2,2'-Thiobis(6-tert-butyl-4-methylphenol); Antioxidant 300; 4,4'-Thiobis(2-tert-butyl-5-methylphenol); Bis(2-tert-butyl-4-methyl-6-hydroxyphenyl) sulfide; Lowinox® 300; AO 300; Santonox® R; 6,6'-Di-tert-butyl-2,2'-thiodi-p-cresol; 2,2'-Thiodi(6-tert-butyl-4-methylphenol)
EINECS	250-905-1

Quality Control

Our Dithiobis[4-(1,1-Dimethylpropyl)Phenol] is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for assay and purity, to ensure it meets stringent industry specifications. Certificates of Analysis (COA) documenting identity, purity, and related substances 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). 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 standard
Assay (HPLC)	≥ 98.0%
Melting Point	160 - 165 °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.