Description

4-[2-(4-Hydroxy-3,5-Ditert-Butyl-Phenyl)Ethenyl]-2,6-Ditert-Butyl-Phen Ol is a high-purity phenolic antioxidant compound, also known as 4-Hydroxy-3,5-di-tert-butylstilbene. This specialized chemical is valued for its ability to inhibit oxidative degradation and extend the service life of sensitive materials. It is primarily sought by manufacturers in the polymer, rubber, and specialty chemical industries for formulating high-performance stabilizer systems.

Application

• Primary antioxidant in polyolefins (e.g., polyethylene, polypropylene) to prevent thermal and oxidative degradation during processing and end-use.
• Stabilizer component in synthetic rubbers and elastomers to maintain flexibility and prevent cracking.
• Additive in lubricants, greases, and hydraulic fluids to enhance oxidative stability and prolong fluid life.
• Intermediate in the synthesis of more complex hindered phenol antioxidants and light stabilizers.
• Stabilizing agent for adhesives, sealants, and coatings to prevent premature aging and maintain adhesion properties.
• Research and development of novel polymer blends and composite materials requiring advanced stabilization.

Basic Information

Product Name	4-[2-(4-Hydroxy-3,5-Ditert-Butyl-Phenyl)Ethenyl]-2,6-Ditert-Butyl-Phen Ol
CAS No.	2950-01-8
Molecular Formula	C30H44O2
Molecular Weight	436.67 g/mol
Synonyms	4-Hydroxy-3,5-di-tert-butylstilbene; 2,6-Di-tert-butyl-4-[2-(3,5-di-tert-butyl-4-hydroxyphenyl)ethenyl]phenol; Phenol, 4,4'-(1,2-ethenediyl)bis[2,6-bis(1,1-dimethylethyl)-; Antioxidant 300; AO 300; Bis(3,5-di-tert-butyl-4-hydroxyphenyl)ethylene; Stilbene antioxidant
EINECS	220-971-6

Quality Control

Our production of 4-[2-(4-Hydroxy-3,5-Ditert-Butyl-Phenyl)Ethenyl]-2,6-Ditert-Butyl-Phen Ol adheres to stringent quality management protocols. Every batch undergoes comprehensive analytical testing, including assay, identification, and impurity profiling, to ensure it meets the high-purity standards required for industrial applications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory 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, prolonged exposure to direct light should be avoided to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	185 - 190 °C
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm

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