Description

Benzenepropanoic Acid, 3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-, Butyl Ester is a high-performance hindered phenolic antioxidant widely used to inhibit oxidative degradation in various materials. This compound is critical for extending the service life and maintaining the physical properties of polymers and other organic substrates by scavenging free radicals. It is an essential additive for manufacturers in the plastics, rubber, coatings, and lubricant industries seeking to enhance product stability and durability under demanding conditions.

Application

• Polymer Stabilization: Primary antioxidant for polyolefins (PP, PE), polystyrene, and engineering plastics to prevent thermal and oxidative degradation during processing and end-use.
• Rubber Industry: Protects synthetic and natural rubber products, such as tires, seals, and hoses, from aging and cracking caused by heat and oxygen exposure.
• Coatings and Adhesives: Inhibits the oxidative cross-linking and embrittlement of resins and binders, ensuring long-term film integrity and adhesion.
• Lubricants and Fuels: Functions as an antioxidant additive in industrial oils, greases, and fuels to reduce sludge formation and viscosity increase.
• Food Contact Materials: Used in compliant formulations for plastics and coatings intended for food packaging applications where stabilization is required.
• Cosmetic and Personal Care: Acts as a stabilizer in formulations containing oils and fats to prevent rancidity and extend shelf life.

Basic Information

Product Name	Benzenepropanoic Acid, 3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-, Butyl Ester
CAS No.	52449-44-2
Molecular Formula	C21H34O3
Molecular Weight	334.50 g/mol
Synonyms	Butyl 3-(3,5-di-tert-butyl-4-hydroxyphenyl)propionate; Butyl 3,5-di-tert-butyl-4-hydroxyhydrocinnamate; Irganox 1076; Anox 1076; BNX 1076; Antioxidant 1076; 3,5-Di-tert-butyl-4-hydroxyhydrocinnamic acid butyl ester; Phenol, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, butyl ester of benzenepropanoic acid
EINECS	257-936-1

Quality Control

Our production of Benzenepropanoic Acid, 3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-, Butyl Ester adheres to stringent quality management systems. Every batch is subjected to rigorous analytical testing, including HPLC for assay and purity, to ensure it meets precise specifications for antioxidant performance. Certificates of Analysis (COA) documenting identity, purity, and key physical parameters are available for all shipments. We support compliance with relevant industry standards for plastics and food contact materials.

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 strong oxidizing agents. The product is light-sensitive (store 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 %
Heavy Metals (as Pb)	≤ 10 ppm

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