Description

2,6-Bis(1-Methylheptadecyl)-p-Cresol is a high-molecular-weight phenolic antioxidant belonging to the hindered phenol class. This compound is valued for its exceptional ability to inhibit oxidative degradation and extend the service life of various organic materials. It is a critical additive for manufacturers in the polymer, lubricant, and fuel industries seeking to enhance product stability and performance under demanding conditions.

Application

• Polymer Stabilizer: Primary antioxidant for polyolefins (PP, PE), elastomers, and engineering plastics to prevent thermal and oxidative degradation during processing and long-term use.
• Lubricant & Grease Additive: Used in industrial and automotive lubricants, hydraulic fluids, and synthetic greases to inhibit oil oxidation, reduce sludge formation, and extend drain intervals.
• Fuel & Petrochemical Additive: Acts as an antioxidant in gasoline, diesel, and jet fuels to improve storage stability and prevent gum formation.
• Adhesive & Sealant Formulation: Enhances the thermal-oxidative stability of hot-melt adhesives, sealants, and caulking compounds.
• Rubber Industry: Protects synthetic rubber (SBR, BR, NBR) and natural rubber against aging, maintaining elasticity and mechanical properties.
• Coating & Resin Stabilizer: Incorporated into protective coatings, varnishes, and unsaturated polyester resins to prevent yellowing and embrittlement caused by oxidation.

Basic Information

Product Name	2,6-Bis(1-Methylheptadecyl)-p-Cresol
CAS No.	5012-62-4
Molecular Formula	C50H94O
Molecular Weight	711.3 g/mol
Synonyms	2,6-Di(1-methylheptadecyl)-4-methylphenol; 2,6-Bis(1-methylheptadecyl)-4-methylphenol; Bis(1-methylheptadecyl)-p-cresol; Antioxidant 2246-S; Irganox L 135; Phenolic antioxidant 2246; 4-Methyl-2,6-bis(1-methylheptadecyl)phenol; Octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate (common trade name analog, often grouped functionally); High molecular weight hindered phenol
EINECS	225-714-6

Quality Control

Our production of 2,6-Bis(1-Methylheptadecyl)-p-Cresol adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing to ensure it meets precise specifications for purity, performance, and consistency. Certificates of Analysis (COA) documenting key parameters such as assay, melting point, and color are available upon request to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). This material is easily oxidized; for long-term storage, consider maintaining under an inert atmosphere (e.g., nitrogen) to preserve efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or flakes
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0 %
Melting Point	50 - 55 °C
Loss on Drying	≤ 0.5 %
Ash Content	≤ 0.1 %
Color (APHA)	≤ 50

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