Description

Benzoic Acid, 3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-,2,4-Bis(1,1-Dimethylpropyl)Phenyl Ester is a high-performance, sterically hindered phenolic antioxidant. This compound matters for its exceptional ability to inhibit oxidative degradation and extend the service life of sensitive materials. It is primarily needed by manufacturers in the polymer, lubricant, and specialty chemical industries seeking to protect their products from thermal and oxidative stress.

Application

• Polymer Stabilizer: A key antioxidant for polyolefins (e.g., PP, PE), engineering plastics, and synthetic rubbers to prevent chain scission and discoloration during processing and end-use.
• Lubricant & Fuel Additive: Used in engine oils, industrial lubricants, greases, and fuels to control oxidation, reduce sludge formation, and maintain viscosity.
• Adhesive & Sealant Formulations: Enhances the shelf-life and thermal stability of hot-melt adhesives, sealants, and caulking compounds.
• Elastomer Protection: Imparts antioxidant properties to synthetic elastomers like SBR, NBR, and EPDM, improving their durability.
• Coating & Ink Additive: Protects industrial coatings, paints, and printing inks from oxidative yellowing and degradation.
• Intermediate for Specialty Chemicals: Serves as a building block for synthesizing more complex antioxidant molecules and UV stabilizers.

Basic Information

Product Name	Benzoic Acid, 3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-,2,4-Bis(1,1-Dimethylpropyl)Phenyl Ester
CAS No.	35439-93-1
Molecular Formula	C₃₁H₄₆O₃
Molecular Weight	466.70 g/mol
Synonyms	2,4-Bis(1,1-dimethylpropyl)phenyl 3,5-di-tert-butyl-4-hydroxybenzoate; Phenol, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-, 2,4-bis(1,1-dimethylpropyl)phenyl ester; Benzoic acid, 3,5-di-tert-butyl-4-hydroxy-, 2,4-bis(1,1-dimethylpropyl)phenyl ester; Antioxidant 35439-93-1; UV Absorber 35439-93-1; Phenolic antioxidant 35439-93-1; Bis(1,1-dimethylpropyl)phenyl di-tert-butyl hydroxybenzoate
EINECS	Contact for details

Quality Control

Our Benzoic Acid, 3,5-Bis(1,1-Dimethylethyl)-4-Hydroxy-,2,4-Bis(1,1-Dimethylpropyl)Phenyl Ester is manufactured under a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for assay and purity, to ensure it meets precise customer specifications and industry standards. Certificates of Analysis (COA) documenting all critical parameters are available upon request.

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 product is easily oxidized; for long-term storage, consider an inert atmosphere (e.g., nitrogen blanket). Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to standard
Assay (HPLC)	≥ 98.0%
Melting Point	95 - 105 °C
Loss on Drying	≤ 0.5%
Heavy Metals (as Pb)	≤ 20 ppm

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