Description

4,4'-Butylidenebis[2,6-Xylenol] is a high-purity phenolic antioxidant and chemical intermediate. This compound is valued for its ability to act as a highly effective stabilizer, preventing oxidative degradation in various polymeric systems. It is primarily sought by manufacturers in the polymer, rubber, and specialty chemical industries for applications requiring robust thermal and oxidative stability.

Application

• Polymer Stabilizer: A key antioxidant and stabilizer for polyolefins (e.g., polyethylene, polypropylene), engineering plastics, and synthetic rubbers to extend service life.
• Rubber Industry: Used as an anti-aging agent in the production of tires, seals, and other rubber goods to prevent cracking and hardening.
• Lubricant & Fuel Additive: Serves as an antioxidant additive in industrial lubricants, greases, and fuels to inhibit sludge formation and viscosity increase.
• Adhesive & Sealant Formulations: Enhances the long-term stability and performance of high-temperature adhesives and sealants.
• Chemical Synthesis: An important intermediate for the synthesis of more complex phenolic antioxidants and specialty chemicals.
• Wire & Cable Insulation: Incorporated into plastic coatings for wires and cables to protect against thermal oxidative stress.

Basic Information

Product Name	4,4'-Butylidenebis[2,6-Xylenol]
CAS No.	82209-87-8
Molecular Formula	C22H30O2
Molecular Weight	326.48 g/mol
Synonyms	4,4'-Butylidenebis(2,6-dimethylphenol); 2,2'-Butylidenebis(4,6-dimethylphenol); Bis(2,6-dimethyl-4-hydroxyphenyl)butylmethane; Antioxidant 702; Phenolic Antioxidant 702; AO 702; BBM; 2,6-Dimethyl-4-[1-(4-hydroxy-3,5-dimethylphenyl)butyl]phenol
EINECS	Contact for details

Quality Control

Our production of 4,4'-Butylidenebis[2,6-Xylenol] adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry benchmarks. A Certificate of Analysis (COA) detailing all test results is provided with each shipment to guarantee traceability and consistent quality.

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 sources and incompatible materials. For long-term storage, consider an inert atmosphere to maintain optimal purity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms
Assay (HPLC)	≥ 98.0%
Melting Point	155 - 165 °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.