Description

Methylene, Diphenyl- CAS NO 3129-17-7 is a high-purity organic chemical compound, also known as diphenylmethane. This versatile intermediate is valued for its role in synthesizing more complex molecules, offering a stable aromatic backbone for various chemical transformations. It is essential for manufacturers in the pharmaceutical, agrochemical, and specialty chemical industries seeking a reliable building block for advanced synthesis.

Application

• Pharmaceutical Intermediate: Serves as a key precursor in the synthesis of active pharmaceutical ingredients (APIs) and fine chemicals.
• Agrochemical Synthesis: Used in the production of pesticides, herbicides, and plant growth regulators.
• Fragrance and Flavor Industry: Acts as a starting material or intermediate for certain aroma chemicals and synthetic musk compounds.
• Polymer and Resin Production: Employed as a monomer or modifier in the manufacture of specialty polymers, epoxy resins, and plasticizers.
• Organic Synthesis & Research: A fundamental reagent in academic and industrial R&D laboratories for constructing complex organic structures.
• Dye and Pigment Manufacturing: Utilized in the synthesis of certain dyes and organic pigments.

Basic Information

Product Name	Methylene, Diphenyl-
CAS No.	3129-17-7
Molecular Formula	C13H12
Molecular Weight	168.23 g/mol
Synonyms	Diphenylmethane; Benzene, 1,1'-methylenebis-; DPM; (Phenylmethyl)benzene; 1,1'-Methylenebisbenzene; Benzylbenzene; Phenyltoluenes; α-Phenyltoluene
EINECS	221-507-4

Quality Control

Our Methylene, Diphenyl- is produced under a stringent quality management system. Each batch undergoes comprehensive analytical testing, including assay by GC/HPLC and identification by FT-IR, to ensure it meets the high standards required for industrial and research applications. Certificates of Analysis (COA) documenting purity and key parameters 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 area away from incompatible materials such as strong acids and oxidizing agents. Recommended storage temperature is 15-25°C. Keep container tightly sealed when not in use to prevent contamination and moisture absorption.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to reference spectrum
Assay (GC)	≥ 98.0%
Water Content (KF)	≤ 0.1%
Residue on Ignition	≤ 0.05%

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