Description

2,2'-(2-Methylpropylidene)Bis[6-(1,1-Dimethylethyl)-4-(1-Methylethyl)Phenol] is a high-performance phenolic antioxidant, specifically a hindered bisphenol derivative. This compound matters for its superior ability to inhibit oxidative degradation and extend the service life of polymers and other sensitive materials. It is essential for manufacturers in the polymer, rubber, and specialty chemical industries who require reliable stabilization against heat and oxygen.

Application

• Primary antioxidant and stabilizer in polyolefins (e.g., PP, PE) and engineering plastics.
• Critical additive in synthetic rubber and elastomer formulations to prevent chain scission and cross-linking.
• Stabilizer in adhesives, sealants, and coatings to enhance durability and shelf life.
• Used in the production of lubricants and greases to prevent oxidation and viscosity changes.
• Intermediate for the synthesis of more complex polymer additives and phosphite antioxidants.
• Protective agent in hot-melt adhesives and other thermally processed materials.

Basic Information

Product Name	2,2'-(2-Methylpropylidene)Bis[6-(1,1-Dimethylethyl)-4-(1-Methylethyl)Phenol]
CAS No.	93893-79-9
Molecular Formula	C₃₄H₅₂O₂
Molecular Weight	492.78 g/mol
Synonyms	2,2'-Isobutylidenebis(6-tert-butyl-4-isopropylphenol); Bis(2-hydroxy-3-tert-butyl-5-isopropylphenyl)methane (isobutylene bridged); Phenol, 2,2'-methylenebis[6-(1,1-dimethylethyl)-4-(1-methylethyl)-; Antioxidant 2246-S; AO-2246S; Low Volatility Bisphenol Antioxidant; Isobutylene-bridged hindered bisphenol
EINECS	Contact for details

Quality Control

Our production of 2,2'-(2-Methylpropylidene)Bis[6-(1,1-Dimethylethyl)-4-(1-Methylethyl)Phenol] adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure high purity and consistent performance. Comprehensive Certificates of Analysis (COA) detailing assay, identity, and impurity profiles 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). This material is easily oxidized; for long-term storage, maintaining an inert atmosphere (e.g., under nitrogen) is recommended to preserve efficacy. Keep away from strong oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Melting Point	125 - 135 °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.