Description

9,10-Dihydro-9-Oxa-10-Phosphaphenanthrene-10-Ethanol 10-Oxide is a high-performance organophosphorus compound, widely recognized as a highly effective reactive flame retardant and a key intermediate in advanced polymer synthesis. Its primary value lies in its ability to impart excellent flame retardancy without compromising the mechanical or thermal properties of the final material, making it a superior alternative to traditional additives. This product is essential for manufacturers in the engineering plastics, epoxy resins, polyurethane, and high-performance coatings industries seeking to meet stringent fire safety regulations.

Application

• Reactive Flame Retardant for Epoxy Resins: A key component in formulations for printed circuit boards (PCBs), semiconductor encapsulants, and composite materials, providing high thermal stability and excellent flame retardancy (e.g., UL94 V-0 rating).
• Polymer Modifier for Engineering Plastics: Used in the synthesis and modification of polycarbonate (PC), polyesters (PBT, PET), and polyamides to enhance fire resistance for applications in electronics, automotive, and aerospace.
• Cross-linking Agent & Intermediate: Serves as a crucial building block for synthesizing phosphorus-containing polyols, hardeners, and other specialty chemicals used in flame-retardant polyurethane foams and coatings.
• Additive for High-Performance Coatings & Adhesives: Incorporated into intumescent coatings, wire and cable coatings, and adhesives to provide durable, non-migrating flame retardant properties.

Basic Information

Item	Detail
Product Name	9,10-Dihydro-9-Oxa-10-Phosphaphenanthrene-10-Ethanol 10-Oxide
CAS No.	63562-41-4
Molecular Formula	C₁₄H₁₃O₄P
Molecular Weight	276.22 g/mol
Synonyms	DOPO-based diol; 10-(2-Hydroxyethyl)-9,10-dihydro-9-oxa-10-phosphaphenanthrene-10-oxide; DOPO-HQ; DOPO derivative; 2-[(6-Oxido-6H-dibenz[c,e][1,2]oxaphosphorin-6-yl)]ethanol; 6H-Dibenz[c,e][1,2]oxaphosphorin, 6-(2-hydroxyethyl)-6-oxido-; Reactive DOPO
EINECS	Contact for details

Quality Control

Our production of 9,10-Dihydro-9-Oxa-10-Phosphaphenanthrene-10-Ethanol 10-Oxide adheres to a stringent quality management system. Every batch undergoes comprehensive analytical testing, including HPLC for purity, titration for hydroxyl value, and melting point determination, to ensure consistency and compliance with customer specifications. A Certificate of Analysis (COA) detailing all critical parameters is provided with each shipment to guarantee traceability and quality assurance for your production processes.

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 product is hygroscopic (moisture-sensitive); the container must be kept tightly sealed to prevent absorption of atmospheric moisture, which can affect product quality and performance.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	118 - 122 °C
Hydroxyl Value	200 - 210 mg KOH/g
Phosphorus Content	10.8 - 11.3 %
Loss on Drying	≤ 0.5 %

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