Description

9,10-Dihydro-9-Oxa-10-Phosphaphenanthrene-10-Propanoic Acid Methyl Ester 10-Oxide is a high-performance organophosphorus compound, widely recognized as a highly effective reactive flame retardant. Its core value proposition lies in its ability to be chemically incorporated into polymer chains, providing durable, non-blooming flame retardancy without compromising the mechanical properties of the final material. This product is essential for manufacturers in the engineering plastics, epoxy resins, polyurethane foams, and synthetic fiber industries seeking to meet stringent fire safety regulations.

Application

• Reactive Flame Retardant for Epoxy Resins: Chemically bonds into epoxy systems for printed circuit boards (PCBs), semiconductor encapsulants, and composite materials, providing excellent thermal stability and UL94 V-0 performance.
• Modifier for Engineering Plastics: Used in polycarbonate (PC), polybutylene terephthalate (PBT), and their blends to enhance flame retardancy while maintaining high impact strength and clarity.
• Additive for Polyurethane (PU) Systems: Imparts flame retardant properties to rigid and flexible PU foams used in construction, automotive interiors, and insulation.
• Component in Unsaturated Polyester Resins: Enhances the fire resistance of composites for transportation, construction, and marine applications.
• Synthetic Fiber Treatment: Applied as a co-monomer or additive to improve the flame retardancy of technical textiles and fibers.
• Adhesives and Coatings: Serves as a flame-retardant cross-linking agent or additive in high-performance industrial adhesives and protective coatings.

Basic Information

Product Name	9,10-Dihydro-9-Oxa-10-Phosphaphenanthrene-10-Propanoic Acid Methyl Ester 10-Oxide
CAS No.	63562-42-5
Molecular Formula	C₁₇H₁₇O₅P
Molecular Weight	332.29 g/mol
Synonyms	DOPO-based Acrylate; Methyl 3-(6-Oxido-6H-dibenz[c,e][1,2]oxaphosphorin-6-yl)propanoate; DOPO Acrylate Derivative; DOPO-MA; Reactive DOPO Derivative; FR-DOPO Acrylate; 6H-Dibenz[c,e][1,2]oxaphosphorin, 6-(2-carbomethoxyethyl)-6-oxide; 9,10-Dihydro-9-oxa-10-phosphaphenanthrene-10-oxide propionic acid methyl ester
EINECS	Contact for details

Quality Control

Our production of 9,10-Dihydro-9-Oxa-10-Phosphaphenanthrene-10-Propanoic Acid Methyl Ester 10-Oxide adheres to a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot undergoes rigorous analytical testing, including HPLC for assay and impurity profiling, to meet precise customer specifications. Certificates of Analysis (COA) detailing purity, melting point, and other critical parameters are provided with every shipment.

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 strong alkalis and incompatible materials. The container must be kept tightly closed to minimize moisture absorption.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	115 - 125 °C
Phosphorus Content	9.2 - 9.5 %
Acid Value	≤ 1.0 mg KOH/g
Moisture (KF)	≤ 0.5 %

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