Description

2,4-Bis(1,1-Dimethylethyl)-3,6-Dimethylphenol is a sterically hindered phenolic compound widely recognized for its effectiveness as an antioxidant and stabilizer. Its primary value lies in its ability to inhibit oxidative degradation, thereby extending the service life and maintaining the performance integrity of various materials. This high-performance additive is essential for 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., polyethylene, polypropylene), polyurethanes, and elastomers to prevent chain scission and discoloration during processing and long-term use.
• Lubricant & Fuel Additive: Used in engine oils, industrial lubricants, greases, and fuels to control oxidation, reduce sludge formation, and extend drain intervals.
• Rubber & Elastomer Protection: Imparts antioxidant properties to synthetic rubbers, tires, and rubber goods, protecting against heat aging and ozone cracking.
• Adhesive & Sealant Formulations: Enhances the shelf-life and thermal stability of hot-melt adhesives, sealants, and other reactive resin systems.
• Intermediate for Specialty Chemicals: Serves as a crucial building block in the synthesis of more complex hindered phenol antioxidants and light stabilizers.
• Coating Stabilizer: Protects industrial and automotive coatings from oxidative yellowing and degradation under UV and thermal exposure.

Basic Information

Product Name	2,4-Bis(1,1-Dimethylethyl)-3,6-Dimethylphenol
CAS No.	70766-52-8
Molecular Formula	C18H30O
Molecular Weight	262.43 g/mol
Synonyms	2,4-Di-tert-butyl-3,6-dimethylphenol; 3,6-Dimethyl-2,4-di-tert-butylphenol; Phenol, 2,4-bis(1,1-dimethylethyl)-3,6-dimethyl-; Antioxidant 703; AO 703; Butylated Hydroxytoluene derivative; BHT derivative; Hindered Phenol Antioxidant 703
EINECS	274-840-0

Quality Control

Our production of 2,4-Bis(1,1-Dimethylethyl)-3,6-Dimethylphenol adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including assay, purity profiling, and identification, to ensure it meets precise specifications for industrial and specialty applications. Certificates of Analysis (COA) documenting all critical quality parameters 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). Due to its nature as an easily oxidized compound, it is recommended to store under an inert atmosphere (e.g., nitrogen) for long-term preservation of quality, especially after opening the original container. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	100°C - 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.