Description

Benzenepropanoic Acid, 3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-, 2-Hydroxyethyl Ester is a high-performance phenolic antioxidant ester, valued for its excellent compatibility and low volatility in demanding polymer systems. This compound is essential for manufacturers seeking to enhance the long-term thermal stability and durability of their products against oxidative degradation. It is primarily utilized in the plastics, rubber, and specialty lubricant industries where extended service life under high-temperature conditions is critical.

Application

• Polymer Stabilization: A key antioxidant for polyolefins (PP, PE), engineering plastics, and synthetic rubbers to prevent thermal-oxidative degradation during processing and end-use.
• Lubricant & Grease Additive: Used in synthetic lubricants and industrial greases to inhibit oxidation, reduce sludge formation, and extend oil life.
• Adhesive & Sealant Formulations: Enhances the aging resistance and maintains the elasticity of hot-melt adhesives, sealants, and caulks.
• Elastomer Protection: Protects SBR, NBR, and other elastomers from cracking and loss of physical properties caused by heat and oxygen exposure.
• Fuel & Petrochemical Additive: Acts as a stabilizer in fuels and certain petrochemical intermediates to prevent gum formation.
• Coating Resins: Incorporated into coating formulations to protect the resin binder from yellowing and embrittlement.

Basic Information

Product Name	Benzenepropanoic Acid, 3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-, 2-Hydroxyethyl Ester
CAS No.	40388-51-0
Molecular Formula	C21H34O4
Molecular Weight	350.49 g/mol
Synonyms	Octadecyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate (common misnomer); 2-Hydroxyethyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate; Irganox 1425 (trade name); Ethanox 398 (trade name); 3,5-Di-tert-butyl-4-hydroxyhydrocinnamic acid 2-hydroxyethyl ester; Phenol, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, 2-hydroxyethyl ester, propanoate; Antioxidant 1425
EINECS	254-908-6

Quality Control

Our production of Benzenepropanoic Acid, 3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-, 2-Hydroxyethyl Ester adheres to stringent quality management systems. Every batch undergoes comprehensive analytical testing to ensure high purity, consistent performance, and compliance with relevant industry specifications. Certificates of Analysis (COA) detailing assay, impurity profile, and physical properties are provided to guarantee traceability and support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Under these conditions, the product remains stable for extended periods.

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.