Description

Bis(4-Ethoxyphenyl)Methane is a symmetrical diaryl ether compound widely employed as a high-purity organic intermediate and functional building block in specialty chemical synthesis. Its stable diphenylmethane backbone with para-ethoxy substituents confers excellent thermal stability, low volatility, and favorable solubility in common organic solvents—making it critical for consistent process performance and product reproducibility. This material is essential for manufacturers developing advanced liquid crystals, high-performance optical resins, photoactive polymers, and pharmaceutical intermediates requiring precise steric and electronic control. Bis(4-Ethoxyphenyl)Methane CAS NO 2212-41-1 meets stringent purity and consistency demands across global R&D and production environments.

Application

• Liquid crystal monomer for STN and TFT display materials
• Building block in the synthesis of photoacid generators (PAGs) for semiconductor photolithography
• Intermediate in pharmaceutical development—particularly for estrogen receptor modulators and anti-inflammatory agents
• Core structure in high-refractive-index optical resins for LED encapsulation and lens coatings
• Monomer for thermally stable polyaryletherketones (PAEK) and polyetherimides (PEI)
• Functional additive in UV-curable coatings and adhesives to enhance crosslink density and surface hardness
• Chromophore precursor in nonlinear optical (NLO) materials for laser frequency doubling
• Stabilizer and co-monomer in specialty silicone-modified epoxy systems

Basic Information

Product Name	Bis(4-Ethoxyphenyl)Methane
CAS No.	2212-41-1
Molecular Formula	C17H20O2
Molecular Weight	256.34 g/mol
Synonyms	4,4'-Dietoxydiphenylmethane; Bis(p-ethoxyphenyl)methane; 4,4'-(Phenylmethylene)diethoxybenzene; p,p'-Diethoxybenzhydrol; 1,1-Bis(4-ethoxyphenyl)methane; 4-Ethoxybenzhydrol ether; NSC 20592; BEM
EINECS	218-642-2

Quality Control

Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) are available upon request. All batches conform to ACS Reagent Grade specifications and are verified for identity, assay, residual solvents, heavy metals (≤10 ppm total), and spectral purity. Testing includes HPLC, GC-MS, FTIR, and 1H-NMR for structural confirmation and impurity profiling. The material is manufactured under ISO 9001-certified processes and complies with REACH and applicable FDA guidelines for non-food-contact industrial use.

Storage

Preserve in a tightly closed container, protected from light. Store at room temperature (15–25°C) in a dry, well-ventilated area. Avoid exposure to moisture and oxidizing agents. Due to its light-sensitive nature, minimize handling under ambient lighting and use amber glass or opaque containers for long-term storage.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Assay (HPLC)	≥99.5%
Melting Point	98–102°C
Identification (IR)	Conforms to reference spectrum
Residue on Ignition	≤0.1%
Heavy Metals (as Pb)	≤10 ppm
Water (Karl Fischer)	≤0.2%
Related Substances (HPLC)	Single impurity ≤0.2%; Total impurities ≤0.5%

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