Description

2 2'-Ethylidenebis(4 6-Di-tert-Butylphenol) is a high-performance sterically hindered phenolic antioxidant. This compound matters for its exceptional ability to inhibit oxidative degradation, thereby extending the service life and stability of sensitive materials. It is primarily needed by manufacturers in the polymer, rubber, and specialty chemical industries seeking to protect their products from thermal and oxidative stress.

Application

• Primary antioxidant in polyolefins (PP, PE) and engineering plastics
• Stabilizer for synthetic rubbers and elastomers against heat aging
• Additive in lubricants, greases, and transformer oils to prevent oxidation
• Stabilizing component in adhesive and sealant formulations
• Intermediate for the synthesis of more complex polymer additives
• Protective agent in hydrocarbon-based fuels and fluids

Basic Information

Product Name	2 2'-Ethylidenebis(4 6-Di-tert-Butylphenol)
CAS No.	118337-09-0
Molecular Formula	C30H46O2
Molecular Weight	438.69 g/mol
Synonyms	Ethylidenebis(2,4-di-tert-butylphenol); 2,2'-Ethylidenebis(4,6-di-tert-butylphenol); Bis(2,4-di-tert-butylphenyl) ethane-1,1-diyl diphenol; Antioxidant 1790; AO 1790; Ethan-1,1-diylbis(2,4-di-tert-butylphenol); 1,1-Bis(2,4-di-tert-butylphenyl)ethane
EINECS	Contact for details

Quality Control

Our production of 2 2'-Ethylidenebis(4 6-Di-tert-Butylphenol) adheres to stringent quality management systems. Every batch undergoes rigorous analytical testing to ensure high purity and consistent performance. Certificates of Analysis (COA) detailing assay, identity, and impurity profiles are available upon request to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated place at room temperature (15-25°C). This material is easily oxidized and should be kept under an inert atmosphere (e.g., nitrogen) for long-term storage to maintain efficacy. 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	160 - 165 °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.