Description

4-Propyl-2,6,7-Trioxa-1-Phosphabicyclo[2.2.2]Octane-1-Thione is a specialized organophosphorus compound featuring a unique bicyclic cage structure. This molecular architecture is critical for its role as a high-performance flame retardant additive, particularly in demanding polymer applications. It is primarily sought after by formulators and manufacturers in the plastics, electronics, and advanced materials industries who require enhanced fire safety without compromising material properties.

Application

• Flame Retardant for Engineering Plastics: A key additive for polycarbonate (PC), polyamide (PA), and their blends, providing excellent thermal stability and flame resistance.
• Electronic Encapsulation Materials: Used in epoxy resins and other potting compounds to protect sensitive electronic components from fire hazards.
• Synthetic Intermediate: Serves as a valuable building block in the synthesis of more complex organophosphorus ligands and biologically active molecules.
• Polymer Modification: Imparts flame-retardant characteristics to synthetic fibers and coatings for technical textiles.
• Additive for High-Temperature Polymers: Suitable for use in polyphenylene oxide (PPO) and other high-performance polymers requiring UL94 V-0 ratings.

Basic Information

Product Name	4-Propyl-2,6,7-Trioxa-1-Phosphabicyclo[2.2.2]Octane-1-Thione
CAS No.	51486-54-5
Molecular Formula	C7H11O3PS
Molecular Weight	206.20 g/mol
Synonyms	1-Thioxo-4-propyl-2,6,7-trioxa-1-phosphabicyclo[2.2.2]octane; 4-Propyl-2,6,7-trioxa-1-phosphabicyclo[2.2.2]octane 1-sulfide; P,P-Phenylene P,P-propyl Phosphonotrithioite (cyclic); Propyl DOPO Sulfide; PDOPOS; Bicyclic Phosphonate Thione; Flame Retardant PDOPOS
EINECS	Contact for details

Quality Control

Our production of 4-Propyl-2,6,7-Trioxa-1-Phosphabicyclo[2.2.2]Octane-1-Thione adheres to a strict quality management system to ensure batch-to-batch consistency and high purity. Each lot is analyzed against stringent in-house specifications using advanced techniques like HPLC, GC, and NMR. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with every 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 away from strong oxidizing agents and moisture. For long-term storage, consider using an inert atmosphere to maintain product integrity.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Melting Point	105 - 110 °C
Loss on Drying	≤ 0.5%
Residue on Ignition	≤ 0.1%

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