Description

2,2'-[p-Phenylenebis(Methylene)]Bis[5,5-Dimethyl-1,3,2-Dioxaphosphorinane] 2,2'-Dioxide is a high-purity, cyclic phosphonate compound valued for its role as a reactive intermediate and flame retardant synergist. Its molecular structure provides excellent thermal stability and compatibility with various polymer matrices, making it a critical component in advanced material formulations. This product is essential for manufacturers in the polymer, electronics, and specialty chemical industries seeking to enhance material performance and meet stringent safety regulations.

Application

• Flame Retardant Synergist: Used in combination with other flame retardants to enhance the fire resistance of engineering plastics, polyurethanes, and epoxy resins for electronics and construction.
• Polymer Additive: Acts as a stabilizer and property modifier in high-performance polymers to improve thermal and oxidative stability.
• Chemical Intermediate: Serves as a key building block in the synthesis of more complex phosphonate-based compounds for specialized applications.
• Electronics Encapsulation: Incorporated into potting compounds and encapsulants to provide flame retardancy for sensitive electronic components.
• Adhesive & Coating Formulations: Enhances the fire safety profile of industrial adhesives, sealants, and protective coatings.
• Research & Development: Utilized in laboratories for developing new materials with tailored flame-retardant and physical properties.

Basic Information

Product Name	2,2'-[p-Phenylenebis(Methylene)]Bis[5,5-Dimethyl-1,3,2-Dioxaphosphorinane] 2,2'-Dioxide
CAS No.	65850-52-4
Molecular Formula	C20H32O6P2
Molecular Weight	430.42 g/mol
Synonyms	1,4-Phenylenebis(methylene) bis(5,5-dimethyl-1,3,2-dioxaphosphorinane 2-oxide); Bis(5,5-dimethyl-2-oxido-1,3,2-dioxaphosphorinan-2-yl)methylbenzene; PX-200 (potential trade name); Cyclic phenylenebis methylene phosphonate; FR-Synergist DOPO derivative; 1,4-Bis((5,5-dimethyl-2-oxido-1,3,2-dioxaphosphorinan-2-yl)methyl)benzene; DOPO-based bifunctional compound
EINECS	Contact for details

Quality Control

Our production of 2,2'-[p-Phenylenebis(Methylene)]Bis[5,5-Dimethyl-1,3,2-Dioxaphosphorinane] 2,2'-Dioxide adheres to a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity and spectroscopic identification (IR, NMR), to ensure consistency and compliance with agreed specifications. Comprehensive Certificates of Analysis (COA) documenting all critical parameters are available for each shipment to support your quality assurance protocols.

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 the container tightly sealed to minimize exposure to atmospheric moisture.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
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.