Description

3,5-Di-tert-Butyl-4-Hydroxyphenylacetic Acid is a high-purity phenolic antioxidant intermediate of significant industrial importance. This compound is valued for its ability to donate a hydrogen atom to free radicals, effectively inhibiting oxidative degradation processes in various substrates. It is primarily sought after by manufacturers in the polymer, rubber, and specialty chemical industries for synthesizing advanced antioxidant additives and stabilizers to enhance product longevity and performance.

Application

• Primary Antioxidant Intermediate: A key building block for the synthesis of high-performance phenolic antioxidants like Irganox® 1076 and other hindered phenol derivatives.
• Polymer Stabilization: Used in the production of additives for polyolefins (PP, PE), polystyrene, and engineering plastics to prevent thermal and oxidative degradation during processing and end-use.
• Rubber Industry: Incorporated into antioxidant formulations for synthetic rubbers and elastomers to extend service life by resisting cracking and hardening.
• Fuel & Lubricant Additives: Serves as a precursor for antioxidants that prevent gum formation and oxidation in fuels, oils, and greases.
• Cosmetic & Personal Care Stabilizers: Used in the synthesis of antioxidants for stabilizing fats, oils, and active ingredients in cosmetic formulations.
• Food Contact Material Additives: Employed in the manufacture of antioxidants compliant for use in plastics intended for food packaging applications.

Basic Information

Product Name	3,5-Di-tert-Butyl-4-Hydroxyphenylacetic Acid
CAS No.	1611-03-6
Molecular Formula	C16H24O3
Molecular Weight	264.36 g/mol
Synonyms	2-(3,5-Di-tert-butyl-4-hydroxyphenyl)acetic Acid; 4-Hydroxy-3,5-di-tert-butylbenzeneacetic Acid; DTBHPA; Acetic acid, (3,5-bis(1,1-dimethylethyl)-4-hydroxyphenyl)-; Benzenepropanoic acid, 3,5-bis(1,1-dimethylethyl)-4-hydroxy-; Irganox 1076 Intermediate; Antioxidant 1076 Precursor; Phenolic Acid Antioxidant Intermediate
EINECS	216-552-2

Quality Control

Our production of 3,5-Di-tert-Butyl-4-Hydroxyphenylacetic Acid adheres to stringent quality management protocols. Every batch is subjected to comprehensive analytical testing, including HPLC for assay and purity, to ensure it meets exacting specifications for use in sensitive downstream synthesis. Certificates of Analysis (COA) documenting identity, purity, and impurity profiles are provided to guarantee traceability and consistency for our global B2B clients.

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 strong oxidizing agents, strong bases, and heat sources. The material is light-sensitive; prolonged exposure to light should be avoided.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.5%
Melting Point	160 - 165 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 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.