Description

6-Methylhepthyl 3-(3,5-Di-tert-Butyl-4-Hydroxyphenyl)Propionate is a high-performance phenolic antioxidant belonging to the hindered phenol family. It is a critical additive for protecting polymers and organic materials from oxidative degradation, thereby extending their service life and maintaining their physical properties. This compound is essential for manufacturers in the plastics, rubber, and synthetic lubricant industries who require reliable stabilization against heat and light-induced aging.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal-oxidative degradation during processing and end-use.
• Synthetic Lubricants & Fluids: Additive in hydraulic fluids, gear oils, and greases to enhance oxidative stability and prolong fluid life under high-temperature operating conditions.
• Adhesives & Sealants: Used in hot-melt and reactive adhesive formulations to prevent gelation and maintain viscosity stability.
• Elastomers & Rubber Products: Protects SBR, NBR, EPDM, and other elastomers from cracking and loss of elasticity caused by oxidation.
• Fuel & Petrochemical Additives: Acts as a stabilizer in fuels and hydrocarbon streams to inhibit gum and sediment formation.
• Coating Resins: Incorporated into alkyds and other coating systems to prevent skinning and improve color retention.

Basic Information

Product Name	6-Methylhepthyl 3-(3,5-Di-tert-Butyl-4-Hydroxyphenyl)Propionate
CAS No.	146598-26-7
Molecular Formula	C25H42O3
Molecular Weight	390.60 g/mol
Synonyms	6-Methylheptyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propanoate; 3-(3,5-Di-tert-butyl-4-hydroxyphenyl)propionic acid 6-methylheptyl ester; Phenolic Antioxidant 146598-26-7; AO-6MH; Antioxidant 6MH; Bis(1,1-dimethylethyl)-4-hydroxybenzenepropanoic acid 6-methylheptyl ester; Irganox 6MH (analogous trade name); Low-volatility hindered phenol antioxidant
EINECS	Contact for details

Quality Control

Our production of 6-Methylhepthyl 3-(3,5-Di-tert-Butyl-4-Hydroxyphenyl)Propionate adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Every lot is analyzed against comprehensive specifications using advanced techniques like HPLC and GC. Certificates of Analysis (COA) documenting identity, purity, and key physical parameters are provided with each shipment to support your quality assurance processes.

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. The product is light-sensitive and should be stored away from light.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or flakes
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Melting Point	50 - 55 °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.