Description

2’,4’-Di-tert-Butylphenyl 3,5-Di-tert-Butyl-4-Hydroxybenzoate is a high-performance hindered phenolic antioxidant, specifically engineered to provide exceptional stability to polymers and other materials susceptible to oxidative degradation. This compound matters for its superior ability to scavenge free radicals and inhibit thermal and light-induced oxidation, thereby significantly extending the service life of finished products. It is primarily needed by manufacturers in the plastics, rubber, synthetic fiber, and specialty lubricant industries who require reliable, long-term protection for their formulations.

Application

• Polymer Stabilization: A primary antioxidant for polyolefins (PP, PE), polyurethanes, and engineering plastics to prevent chain scission and discoloration during processing and end-use.
• Rubber Industry: Used in the production of synthetic rubbers (SBR, BR) and elastomers to protect against heat aging and maintain mechanical properties.
• Synthetic Fibers & Adhesives: Imparts oxidative stability to fibers and adhesive resins, enhancing durability and color fastness.
• Lubricants & Greases: Functions as an antioxidant additive in industrial lubricants and synthetic oils to reduce sludge formation and viscosity increase.
• Fuel & Petrochemical Additives: Helps stabilize fuels and hydrocarbon-based fluids against gum formation and oxidative breakdown.
• Coating & Ink Formulations: Protects solvent-based and high-solid coatings from yellowing and embrittlement caused by UV exposure and heat.

Basic Information

Product Name	2’,4’-Di-tert-Butylphenyl 3,5-Di-tert-Butyl-4-Hydroxybenzoate
CAS No.	4221-80-1
Molecular Formula	C35H54O3
Molecular Weight	522.81 g/mol
Synonyms	Benzoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, 2,4-bis(1,1-dimethylethyl)phenyl ester; Phenol, 2,4-di-tert-butylphenyl 3,5-di-tert-butyl-4-hydroxybenzoate; Antioxidant 350; Irganox 350; 3,5-Di-tert-butyl-4-hydroxybenzoic acid 2,4-di-tert-butylphenyl ester; UV-350; Lowilite 35; AO-350
EINECS	224-177-6

Quality Control

Our production of 2’,4’-Di-tert-Butylphenyl 3,5-Di-tert-Butyl-4-Hydroxybenzoate adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) detailing all test results are provided and 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, and well-ventilated area at room temperature (15-25°C). Keep away from heat sources and incompatible materials. Due to its light-sensitive nature, containers should be kept in the original packaging or opaque storage until use.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	190°C - 195°C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1%

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