Description

4-(1,1-Dimethylethyl)-2-[[4-(1,1-Dimethylethyl)-2-Hydroxyphenyl]Dithio]Phenol is a specialized phenolic compound featuring a disulfide bridge, making it a valuable intermediate and functional additive. Its molecular structure provides unique antioxidant and radical-scavenging properties, which are critical for enhancing the stability and performance of various industrial formulations. This chemical is primarily sought after by manufacturers in the polymer, lubricant, and specialty chemical industries for its ability to inhibit degradation and extend product lifespan.

Application

• Polymer Stabilizer: Acts as a highly effective antioxidant and radical scavenger in plastics and synthetic rubbers to prevent thermal and oxidative degradation during processing and service life.
• Lubricant & Fuel Additive: Used as an antioxidant additive in engine oils, industrial lubricants, and fuels to reduce sludge formation and maintain viscosity under high-temperature conditions.
• Chemical Intermediate: Serves as a key building block for synthesizing more complex antioxidants, UV stabilizers, and specialty phenolic resins.
• Adhesive & Sealant Formulations: Enhances the long-term stability and durability of high-performance adhesives and sealants by preventing oxidative cross-linking and embrittlement.
• Elastomer Production: Incorporated into the manufacture of specialty elastomers to improve their resistance to heat aging and environmental stress cracking.

Basic Information

Product Name	4-(1,1-Dimethylethyl)-2-[[4-(1,1-Dimethylethyl)-2-Hydroxyphenyl]Dithio]Phenol
CAS No.	94158-36-8
Molecular Formula	C20H26O2S2
Molecular Weight	362.55 g/mol
Synonyms	2,2'-Thiobis(4-tert-butylphenol) disulfide; 4,4'-Thiobis(2-tert-butylphenol) disulfide; Bis(2-tert-butyl-4-hydroxyphenyl) disulfide; 2,2'-Dithiobis(4-tert-butylphenol); Phenol, 4-(1,1-dimethylethyl)-2-[[4-(1,1-dimethylethyl)-2-hydroxyphenyl]dithio]-; Antioxidant 300; AO 300; TBPS Disulfide
EINECS	Contact for details

Quality Control

Our production of 4-(1,1-Dimethylethyl)-2-[[4-(1,1-Dimethylethyl)-2-Hydroxyphenyl]Dithio]Phenol adheres to stringent quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity, consistent performance, and compliance with agreed specifications. Comprehensive Certificates of Analysis (COA) detailing identity, assay, and impurity profiles are available upon request 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 a controlled room temperature (15-25°C). Due to its properties of being light-sensitive and easily oxidized, it is recommended to store the material under an inert atmosphere (e.g., nitrogen) for long-term preservation and to minimize quality degradation. Keep away from heat, sparks, and open flames.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	155 - 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.