Description

3,3'-Methylenebis[1-(1,1-Dimethylethyl)-5,6,7,8-Tetrahydro-2-Naphthol] is a high-purity sterically hindered phenolic compound, valued for its exceptional performance as an antioxidant and stabilizer in demanding polymer systems. Its molecular structure provides superior thermal and oxidative stability, making it a critical additive for extending the service life and maintaining the properties of advanced materials. This product is essential for manufacturers in the polymer, specialty chemical, and lubricant industries seeking to enhance product durability under high-stress conditions.

Application

• Primary antioxidant and stabilizer in high-performance polymers, including polyolefins (PP, PE) and engineering plastics.
• Additive in synthetic lubricants and greases to prevent oxidative degradation and extend operational life.
• Stabilizing agent for elastomers and rubber compounds to protect against heat aging and maintain elasticity.
• Key intermediate in the synthesis of more complex, high-molecular-weight hindered phenol antioxidants.
• Stabilizer component in adhesive and sealant formulations to prevent gelation and maintain viscosity.
• Additive for hydrocarbon-based fuels and fluids to improve oxidative stability.
• Used in research and development of novel polymeric materials with enhanced weatherability.

Basic Information

Product Name	3,3'-Methylenebis[1-(1,1-Dimethylethyl)-5,6,7,8-Tetrahydro-2-Naphthol]
CAS No.	93803-64-6
Molecular Formula	C₃₁H₄₄O₂
Molecular Weight	448.68 g/mol
Synonyms	3,3'-Methylenebis(6-tert-butyl-5,6,7,8-tetrahydro-2-naphthol); Bis(6-tert-butyl-5,6,7,8-tetrahydro-2-naphthyl)methane-3,3'-diol; Antioxidant 4426; 6,6'-Di-tert-butyl-3,3'-methylenebis(5,6,7,8-tetrahydro-2-naphthol); Tetrahydro Binaphthol Derivative; Hindered Phenolic Antioxidant 93803-64-6; Methylene-bridged Tetrahydro Binaphthol
EINECS	Contact for details

Quality Control

Our production of 3,3'-Methylenebis[1-(1,1-Dimethylethyl)-5,6,7,8-Tetrahydro-2-Naphthol] adheres to strict quality management protocols to ensure batch-to-batch consistency and high purity. Each lot undergoes rigorous analytical testing, including HPLC for assay and impurity profiling. Certificates of Analysis (COA) documenting identity, purity, and key physical parameters are provided with every shipment to support your quality assurance and regulatory needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat, open flames, and incompatible materials. Due to its light-sensitive nature, the container should be opaque or stored in darkness.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	185 - 195 °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.