Description

2,2'-[3-(Butylthio)Propylidene]Bis[4-(tert-Butyl)-o-Cresol] is a high-performance phenolic antioxidant widely used to inhibit oxidative degradation in various polymer systems. Its molecular structure provides excellent compatibility and low volatility, making it a critical additive for extending the service life and maintaining the physical properties of sensitive materials. This compound is essential for manufacturers in the plastics, rubber, and specialty chemical industries seeking reliable stabilization solutions for their products.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (e.g., polyethylene, polypropylene) to prevent thermal and oxidative degradation during processing and long-term use.
• Rubber Industry: Used in the production of synthetic rubbers (SBR, BR, NBR) and latex to protect against aging and maintain elasticity.
• Adhesives and Sealants: Enhances the shelf-life and performance stability of hot-melt, pressure-sensitive, and structural adhesives.
• Lubricants and Greases: Antioxidant additive in industrial lubricants and synthetic oils to reduce sludge formation and viscosity increase.
• Fuel and Oil Additives: Used in gasoline and diesel additives to improve oxidation stability and prevent gum formation.
• Engineering Plastics: Stabilizer for technical polymers like polyamides (PA) and polyacetals (POM) that require high-temperature processing.
• Wire and Cable Insulation: Protects polymeric insulation materials from oxidative breakdown, ensuring long-term electrical integrity.

Basic Information

Product Name	2,2'-[3-(Butylthio)Propylidene]Bis[4-(tert-Butyl)-o-Cresol]
CAS No.	94386-23-9
Molecular Formula	C30H46O2S
Molecular Weight	470.75 g/mol
Synonyms	2,2'-Thiobis[6-(1,1-dimethylethyl)-4-methylphenol]; Antioxidant 300; Butylated hydroxy toluene derivative; 4,4'-Thiobis(2-tert-butyl-5-methylphenol); Lowinox 44B25; AO-300; Phenolic thioether antioxidant; 2,2'-Thiobis(6-tert-butyl-4-methylphenol)
EINECS	305-634-6

Quality Control

Our production of 2,2'-[3-(Butylthio)Propylidene]Bis[4-(tert-Butyl)-o-Cresol] adheres to stringent quality management systems to ensure batch-to-batch consistency and high purity. Every lot is tested against comprehensive specifications using advanced analytical techniques including HPLC, GC, and IR spectroscopy. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at ambient temperature (15-25°C). Keep away from heat sources, open flames, and incompatible materials. Under these conditions, the product remains stable for an extended period.

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)	≤ 10 ppm
Sulfur Content	6.5 - 7.2 %

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