Description

Bis(4-Methoxyphenyl)Phosphinic Acid CAS NO 20434-05-3 is a specialized organophosphorus compound featuring two methoxyphenyl groups attached to a phosphinic acid core. This unique structure makes it a valuable intermediate in the synthesis of advanced materials and fine chemicals, particularly where controlled phosphorus chemistry is required. It is primarily sought after by R&D chemists and process engineers in the pharmaceutical, agrochemical, and specialty polymer industries for developing novel ligands, flame retardants, and photoinitiators.

Application

• Pharmaceutical Intermediate: Key building block in the synthesis of novel active pharmaceutical ingredients (APIs) and drug candidates.
• Agrochemical Synthesis: Used as a precursor for creating advanced herbicides, insecticides, and plant growth regulators.
• Ligand & Catalyst Development: Serves as a starting material for synthesizing specialized phosphine-based ligands used in homogeneous catalysis.
• Flame Retardant Formulations: Incorporated as a reactive intermediate in the production of high-performance, halogen-free flame retardants for polymers.
• Photoinitiator & UV Stabilizer Precursor: Utilized in the development of advanced photoinitiators for coatings and UV stabilizers for plastics.
• Material Science Research: Employed in R&D for creating novel organophosphorus compounds with specific electronic or optical properties.

Basic Information

Product Name	Bis(4-Methoxyphenyl)Phosphinic Acid
CAS No.	20434-05-3
Molecular Formula	C14H15O4P
Molecular Weight	278.24 g/mol
Synonyms	Di(4-methoxyphenyl)phosphinic acid; Bis(p-methoxyphenyl)phosphinic acid; Phosphinic acid, bis(4-methoxyphenyl)-; (4-Methoxyphenyl)phosphinic acid dimer; p-Methoxyphenylphosphinic acid dimer; 4,4'-Dimethoxydiphenylphosphinic acid; DPMPhA; Contact for additional trade names.
EINECS	Contact for details

Quality Control

Our Bis(4-Methoxyphenyl)Phosphinic Acid is manufactured under strict quality management protocols. Each batch undergoes rigorous analytical testing, including HPLC for purity and identity confirmation via FT-IR and NMR spectroscopy, to ensure it meets exacting standards for research and industrial use. A comprehensive Certificate of Analysis (COA) detailing purity, assay, and impurity profiles is provided with every shipment.

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 product is hygroscopic (moisture-sensitive); keep the container tightly sealed in a dry environment to prevent degradation. Keep away from incompatible materials such as strong bases and oxidizing agents.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 10 ppm

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