Description

3,9-Bis(2-Chloroethoxy)-2,4,8,10-Tetraoxa-3,9-Diphosphaspiro[5.5]Undecane is a specialized organophosphorus compound belonging to the class of spirocyclic phosphates. This chemical is valued for its role as a reactive intermediate and flame-retardant synergist, offering enhanced thermal stability and efficiency in polymer formulations. It is primarily utilized by manufacturers in the plastics, electronics, and advanced materials industries seeking to improve the fire safety and performance characteristics of their products.

Application

• As a reactive flame-retardant additive and synergist in engineering plastics and thermosetting resins.
• Intermediate in the synthesis of advanced phosphorus-containing polymers and oligomers.
• Component in flame-retardant formulations for epoxy resins, polyurethanes, and unsaturated polyesters.
• Used in the production of flame-retardant coatings and adhesives for electronic components.
• Potential additive for improving the thermal stability and fire resistance of textile finishes.
• Research and development of novel polymeric materials with enhanced flame-retardant properties.

Basic Information

Product Name	3,9-Bis(2-Chloroethoxy)-2,4,8,10-Tetraoxa-3,9-Diphosphaspiro[5.5]Undecane
CAS No.	60860-22-2
Molecular Formula	C9H16Cl2O6P2
Molecular Weight	369.07 g/mol
Synonyms	3,9-Bis(2-chloroethoxy)-2,4,8,10-tetraoxa-3,9-diphosphaspiro[5.5]undecane; Spirocyclic Phosphonate Ester; 2,4,8,10-Tetraoxa-3,9-diphosphaspiro[5.5]undecane, 3,9-bis(2-chloroethoxy)-; Phosphoric acid, P,P'-(2-chloroethoxy)-, spirobi(1,3,2-dioxaphosphorinane) derivative; FR Intermediate; Spirobisphosphonate Ester; Contact for additional synonyms.
EINECS	Contact for details

Quality Control

Our production of 3,9-Bis(2-Chloroethoxy)-2,4,8,10-Tetraoxa-3,9-Diphosphaspiro[5.5]Undecane adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure consistency, purity, and compliance with agreed specifications. A comprehensive Certificate of Analysis (COA) detailing identity, assay, and impurity profiles is provided with each shipment to guarantee traceability and support your quality assurance 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); containers must be kept tightly sealed to prevent degradation from atmospheric moisture. Keep away from strong bases and oxidizing agents.

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%
Chloride Content	Conforms to theoretical value

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