Description

Phosphinic Acid, Diphenyl-, 1,4-Butanediyl Ester is a specialized organophosphorus compound with the CAS number 4151-25-1. This chemical serves as a high-performance intermediate and additive, valued for its unique molecular structure that combines phosphinic acid functionality with a flexible butylene linker. It is essential for manufacturers and R&D teams in advanced material science and specialty chemical synthesis who require precise, reliable building blocks for creating novel polymers, flame retardants, and stabilizers.

Application

• As a key monomer or co-monomer in the synthesis of specialty polyphosphonates and polyphosphinates for high-temperature and flame-retardant applications.
• As a reactive intermediate in the production of advanced flame retardant additives for engineering plastics, textiles, and coatings.
• As a ligand or precursor in the development of metal complexing agents and catalysts for specialized organic reactions.
• In the formulation of polymer stabilizers and antioxidants to enhance material longevity and performance.
• For research and development of novel phosphorus-containing materials with tailored properties for electronics or aerospace.
• As a building block in the synthesis of pharmaceutical intermediates or agrochemical active ingredients requiring specific phosphorus motifs.

Basic Information

Product Name	Phosphinic Acid, Diphenyl-, 1,4-Butanediyl Ester
CAS No.	4151-25-1
Molecular Formula	C22H23O4P2
Molecular Weight	428.36 g/mol
Synonyms	1,4-Butylene Bis(diphenylphosphinite); Bis(diphenylphosphinyloxy)butane; Tetramethylene Bis(diphenylphosphinite); Diphenylphosphinic Acid Butylene Ester; Butane-1,4-diyl Bis(P,P-diphenylphosphinate); 1,4-Bis(diphenylphosphinoyloxy)butane; P,P,P',P'-Tetraphenyl-1,4-butylene Diphosphonite; DPBPE
EINECS	Contact for details

Quality Control

Every batch of Phosphinic Acid, Diphenyl-, 1,4-Butanediyl Ester is produced and tested under a stringent quality management system to ensure batch-to-batch consistency and high purity. Our products undergo rigorous quality testing to ensure compliance with industry standards. Certificates of Analysis (COA) detailing purity, identity, and impurity profiles are available upon request.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at room temperature (15-25°C). Keep away from heat, sparks, and open flame. Due to its light-sensitive nature, the container should be opaque or stored in dark conditions.

Specification

Item	Specification
Appearance	White to off-white crystalline powder or solid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Melting Point	Contact for details
Loss on Drying	≤ 0.5%
Heavy Metals	≤ 20 ppm

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