Description

2,2'-Thiobis(4,6-Di-sec-Pentylphenol) is a high-performance phenolic antioxidant and metal deactivator widely used in polymer stabilization. Its primary value lies in its exceptional ability to inhibit oxidative degradation and chelate metal ions that can catalyze decomposition, thereby significantly extending the service life of sensitive materials. This compound is essential for formulators and manufacturers in the plastics, rubber, and lubricant industries who require robust stabilization against heat and oxidation.

Application

• Polymer Stabilization: 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 in synthetic rubber formulations to protect against aging, maintain elasticity, and prevent cracking caused by heat and metal ion exposure.
• Lubricants and Greases: Incorporated into industrial lubricants and greases to enhance oxidative stability, reduce sludge formation, and prolong operational life.
• Adhesives and Sealants: Improves the long-term stability and performance of adhesive and sealant formulations by preventing binder degradation.
• Fuel and Oil Additives: Acts as an antioxidant additive in fuels and transformer oils to inhibit gum formation and oxidative breakdown.
• Wire and Cable Insulation: Protects polymer insulation materials from copper-catalyzed degradation, ensuring electrical integrity and durability.

Basic Information

Product Name	2,2'-Thiobis(4,6-Di-sec-Pentylphenol)
CAS No.	90-67-5
Molecular Formula	C32H50O2S
Molecular Weight	498.80 g/mol
Synonyms	2,2'-Thiobis(4,6-bis(1-methylbutyl)phenol); 4,4'-Thiobis(2-(1-methylbutyl)-6-(1-methylbutyl)phenol); Antioxidant 300; Phenol, 2,2'-thiobis[4,6-bis(1-methylbutyl)-; Irganox 1081; Ethanox 398; AO-300; Bis(4,6-di-sec-pentylphenyl) sulfide
EINECS	202-010-6

Quality Control

Our 2,2'-Thiobis(4,6-Di-sec-Pentylphenol) is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing to ensure it meets precise specifications for purity, performance, and consistency. A comprehensive Certificate of Analysis (COA) detailing assay, impurity profile, and physical properties is provided with each shipment to guarantee traceability and compliance with your technical requirements.

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) in the container headspace is recommended. 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	125 - 130 °C
Loss on Drying	≤ 0.5 %
Heavy Metals (as Pb)	≤ 20 ppm
Sulfur Content	6.2 - 6.6 %

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