Description

2,2'-Methylenebis[3,5-Dihydroxy-4,4-Dimethyl-6-(1-Oxopropyl)-2,5-Cyclohexadien-1-One] is a specialized phenolic compound with a complex molecular structure, serving as a high-performance intermediate and functional additive. Its value lies in its ability to act as a potent antioxidant and stabilizer, protecting materials from oxidative degradation. This makes it a critical component for manufacturers in the polymer, specialty chemical, and advanced material sectors seeking to enhance product longevity and performance under demanding conditions.

Application

• Polymer Stabilization: Primary application as a high-efficiency antioxidant and light stabilizer in engineering plastics, synthetic rubbers, and specialty polymers to prevent thermal and UV-induced degradation.
• Lubricant & Fuel Additive: Used as an antioxidant additive in high-performance lubricating oils, greases, and industrial fuels to extend service life and maintain viscosity under oxidative stress.
• Specialty Chemical Synthesis: Serves as a key building block or intermediate in the synthesis of more complex antioxidants, pharmaceutical agents, and advanced organic compounds.
• Adhesive & Sealant Formulations: Incorporated to improve the thermal stability and shelf-life of high-performance adhesives, sealants, and coating systems.
• Elastomer Protection: Protects synthetic elastomers and rubber products from cracking and embrittlement caused by exposure to heat and oxygen.

Basic Information

Product Name	2,2'-Methylenebis[3,5-Dihydroxy-4,4-Dimethyl-6-(1-Oxopropyl)-2,5-Cyclohexadien-1-One]
CAS No.	3570-39-6
Molecular Formula	C25H32O8
Molecular Weight	460.52 g/mol
Synonyms	2,2'-Methylenebis(4,6-di-tert-butylphenol) derivative; 2,2'-Methylenebis(4,6-di-tert-butyl-3-hydroxybenzyl propionate); Antioxidant 1790; Bis(3,5-di-tert-butyl-4-hydroxyhydrocinnamoyl)methane; 1,1'-(Methylenebis(4-hydroxy-3,5-di-tert-butyl-2,1-phenylene))bis(1-oxopropan-2-one); Lowilite 1790; Irganox 1790 (common trade name); Phenolic antioxidant 1790
EINECS	Contact for details

Quality Control

Our production of 2,2'-Methylenebis[3,5-Dihydroxy-4,4-Dimethyl-6-(1-Oxopropyl)-2,5-Cyclohexadien-1-One] adheres to stringent quality management protocols to ensure batch-to-batch consistency and reliability. Each lot is subjected to comprehensive analytical testing, including assay, impurity profiling, and physical characterization. Certificates of Analysis (COA) documenting full specifications are provided with every shipment. Our quality systems are designed to meet the rigorous demands of global industrial and specialty chemical applications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at a controlled room temperature (15-25°C). This product is easily oxidized (store under inert atmosphere) and is light-sensitive (store away from light). Keep away from heat, sparks, and open flame. For long-term storage, consider packaging under an inert gas such as nitrogen to preserve efficacy.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0 %
Melting Point	155 - 165 °C
Loss on Drying	≤ 0.5 %
Heavy Metals (as Pb)	≤ 10 ppm
Residue on Ignition	≤ 0.1 %

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