Description

2,2'-Thiobis[4-tert-Butyl-3,6-Xylenol] is a high-performance phenolic antioxidant widely recognized for its exceptional stabilizing properties. This compound is critical for preventing oxidative degradation and extending the service life of polymers and other sensitive materials. It is an essential additive for manufacturers in the plastics, rubber, and lubricant industries who require reliable protection against thermal and oxidative stress.

Application

• Primary antioxidant for polyolefins (e.g., PP, PE) to prevent thermal degradation during processing and in end-use.
• Stabilizer for synthetic rubbers and elastomers to maintain elasticity and prevent cracking.
• Additive in industrial lubricants and greases to inhibit oxidation and sludge formation.
• Stabilizing agent in adhesives, sealants, and coatings to ensure product consistency and durability.
• Used in the production of food-grade polymer articles where compliant antioxidant protection is needed.
• Component in petroleum-based products and fuels to enhance oxidative stability.

Basic Information

Product Name	2,2'-Thiobis[4-tert-Butyl-3,6-Xylenol]
CAS No.	84604-87-5
Molecular Formula	C22H30O2S
Molecular Weight	358.54 g/mol
Synonyms	2,2'-Thiobis(4-tert-butyl-3,6-dimethylphenol); 2,2'-Thiobis(6-tert-butyl-4-methyl-m-cresol); Antioxidant 300; AO 300; 4,4'-Thiobis(2-tert-butyl-5-methylphenol); Lowinox 300; Butylphenol sulfide; Santonox R; CAS 84604-87-5
EINECS	283-254-9

Quality Control

Our production of 2,2'-Thiobis[4-tert-Butyl-3,6-Xylenol] adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including assay, identification, and impurity profiling, to ensure it meets precise customer specifications and industry benchmarks. A Certificate of Analysis (COA) documenting purity, physical properties, and test results is provided with each shipment and is available upon request.

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. The product is light-sensitive and should be stored away from direct light exposure.

Specification

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

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