Description

4-(1,1-Dimethylethyl)-2-Methyl-6-(1,1,3,3-Tetramethylbutyl)Phenol is a sterically hindered phenolic compound, widely recognized for its excellent antioxidant and stabilizing properties. Its molecular structure provides superior performance in protecting materials from oxidative degradation and thermal stress. This high-purity chemical is essential for formulators and manufacturers in the polymer, lubricant, and specialty chemical industries seeking to enhance product longevity and stability.

Application

• Primary antioxidant and stabilizer in polyolefins (e.g., polyethylene, polypropylene) and other polymers.
• Additive in lubricating oils and greases to prevent oxidation and extend service life.
• Stabilizing agent in adhesives, sealants, and elastomers to prevent premature aging.
• Intermediate in the synthesis of more complex hindered phenol antioxidants and light stabilizers.
• Protective additive in fuels and industrial fluids to inhibit gum and sludge formation.
• Used in rubber compounding to protect against heat and oxygen degradation.

Basic Information

Product Name	4-(1,1-Dimethylethyl)-2-Methyl-6-(1,1,3,3-Tetramethylbutyl)Phenol
CAS No.	71889-15-1
Molecular Formula	C19H32O
Molecular Weight	276.46 g/mol
Synonyms	2-Methyl-6-(1,1,3,3-tetramethylbutyl)-4-tert-butylphenol; 4-tert-Butyl-2-methyl-6-(1,1,3,3-tetramethylbutyl)phenol; 6-(1,1,3,3-Tetramethylbutyl)-4-tert-butyl-2-methylphenol; Phenol, 4-(1,1-dimethylethyl)-2-methyl-6-(1,1,3,3-tetramethylbutyl)-; Antioxidant 703; AO 703; CAS 71889-15-1
EINECS	Contact for details

Quality Control

Our production of 4-(1,1-Dimethylethyl)-2-Methyl-6-(1,1,3,3-Tetramethylbutyl)Phenol adheres to stringent quality management systems to ensure batch-to-batch consistency and high purity. Each lot is tested against comprehensive specifications, including identity, assay, and impurity profiles. Certificates of Analysis (COA) documenting all test results are 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, well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. This material is light-sensitive (store away from light).

Specification

Item	Specification
Appearance	White to off-white crystalline powder or flakes
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0 %
Melting Point	48 - 52 °C
Loss on Drying	≤ 0.5 %
Heavy Metals (as Pb)	≤ 10 ppm

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