Description

2,6-Di-tert-Butyl-4-Mercaptophenol is a sterically hindered phenolic antioxidant and metal deactivator, specifically designed to inhibit oxidative degradation. Its core value lies in its dual functionality, acting as a radical scavenger while also chelating metal ions that catalyze decomposition. This compound is essential for manufacturers in the polymer, rubber, and lubricant industries who require high-performance stabilization for their products under demanding conditions.

Application

• Primary antioxidant and stabilizer in polyolefins (polyethylene, polypropylene) to prevent thermal and oxidative degradation during processing and service life.
• Metal deactivator and antioxidant in lubricating oils, greases, and fuels to enhance stability and prevent sludge formation.
• Stabilizing agent for synthetic rubbers and elastomers, improving their resistance to heat aging and extending product durability.
• Additive in adhesive and sealant formulations to prevent gelation and maintain viscosity stability.
• Intermediate in the synthesis of more complex hindered phenol antioxidants and other specialty chemicals.
• Stabilizer for transformer oils and other industrial fluids requiring long-term oxidative stability.

Basic Information

Product Name	2,6-Di-tert-Butyl-4-Mercaptophenol
CAS No.	950-59-4
Molecular Formula	C14H22OS
Molecular Weight	238.39 g/mol
Synonyms	2,6-Di-tert-butyl-4-mercaptophenol; 4-Hydroxy-3,5-di-tert-butylbenzenethiol; 3,5-Di-tert-butyl-4-hydroxybenzenethiol; Antioxidant 300; DBMP; 2,6-DTBM; AO 300; 4-Mercapto-2,6-di-tert-butylphenol; Phenol, 2,6-bis(1,1-dimethylethyl)-4-mercapto-
EINECS	213-455-7

Quality Control

Our production of 2,6-Di-tert-Butyl-4-Mercaptophenol adheres to stringent quality management protocols. Every batch is analyzed to ensure it meets precise chemical and physical specifications, with a focus on high purity and consistent performance. Certificates of Analysis (COA) documenting key parameters such as assay, melting point, and appearance are provided and available upon request to support your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Due to its sensitivity to oxidation, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0 %
Melting Point	161 - 165 °C
Loss on Drying	≤ 0.5 %

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