Description

10-(2,5-Dihydroxyphenyl)-10H-9-Oxa-10-Phospha-Phenanthrene-10-Oxide is a high-purity, organophosphorus compound featuring a unique phenanthrene-based heterocyclic structure. This compound matters as a versatile and highly effective phosphorus-containing flame retardant and stabilizer, offering superior thermal stability and compatibility with various polymer matrices. It is primarily needed by manufacturers in the plastics, electronics, and advanced materials industries seeking to enhance the fire safety and longevity of their products.

Application

• Flame Retardant for Engineering Plastics: Used as an additive in polycarbonate (PC), polyesters (PBT, PET), and epoxy resins to improve fire resistance (UL94 rating) without compromising mechanical properties.
• Stabilizer for High-Performance Polymers: Acts as a thermal and oxidative stabilizer in high-temperature polymer applications, extending product lifespan.
• Component in Intumescent Flame Retardant Systems: Serves as an acid source (phosphorus component) in intumescent coatings and formulations for textiles, cables, and construction materials.
• Additive for Electronic Encapsulants: Incorporated into potting compounds and encapsulants for electronic components to provide flame retardancy and meet safety standards (e.g., IEC).
• Synergist with Halogen-Free Systems: Works synergistically with nitrogen-based compounds (like melamine derivatives) to create effective, environmentally friendly halogen-free flame retardant packages.
• Intermediate for Specialty Chemicals: Utilized in the synthesis of more complex organophosphorus ligands or functional additives.

Basic Information

Item	Details
Product Name	10-(2,5-Dihydroxyphenyl)-10H-9-Oxa-10-Phospha-Phenanthrene-10-Oxide
CAS No.	99208-50-1
Molecular Formula	C20H13O4P
Molecular Weight	348.29 g/mol
Synonyms	10-(2,5-Dihydroxyphenyl)-10H-9-oxa-10-phosphaphenanthrene-10-oxide; DOPO-DHQ; 9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide derivative; DOPO-hydroquinone adduct; Phosphaphenanthrene oxide derivative; FR-DOPO-HQ; ODPA precursor; Contact for details on additional trade names.
EINECS	Contact for details

Quality Control

Our production of 10-(2,5-Dihydroxyphenyl)-10H-9-Oxa-10-Phospha-Phenanthrene-10-Oxide adheres to a strict quality management system. Every batch undergoes rigorous analytical testing, including HPLC for purity, melting point determination, and spectroscopic identification (IR, NMR), to ensure it meets precise specifications for use in high-performance applications. Certificates of Analysis (COA) documenting all critical parameters are available upon request to support your quality assurance and regulatory compliance needs.

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). This material is moisture-sensitive (hygroscopic); keep the container tightly sealed to prevent absorption of atmospheric moisture.

Specification

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