Description

2,2'-Oxybis[5,5-Bis(Bromomethyl)-1,3,2-Dioxaphosphorinane] 2,2'-Dioxide is a high-purity, brominated organophosphorus compound, specifically a cyclic phosphonate ester. This specialty chemical serves as a highly effective reactive flame retardant and cross-linking agent, valued for its ability to impart durable fire resistance to polymer matrices. It is primarily sought by manufacturers in the plastics, textiles, and advanced material sectors seeking to enhance the safety and regulatory compliance of their products.

Application

• Reactive Flame Retardant for Polymers: Incorporated into polyurethane foams, epoxy resins, and unsaturated polyesters to provide inherent, non-leaching flame retardancy.
• Cross-linking Agent for Thermosets: Enhances thermal stability and mechanical properties in high-performance coatings and composite materials.
• Textile Finishing: Used in back-coating formulations for upholstery, curtains, and technical textiles to meet stringent fire safety standards.
• Additive for Engineering Plastics: Improves the fire resistance of materials like polyamides (nylon) and polycarbonates without significantly compromising other physical properties.
• Synergist in Halogen-Containing Systems: Works in conjunction with antimony trioxide and other synergists to enhance overall flame-retardant efficiency.
• Intermediate for Specialty Chemicals: Serves as a key building block for synthesizing more complex phosphorus-based flame retardants and additives.

Basic Information

Product Name	2,2'-Oxybis[5,5-Bis(Bromomethyl)-1,3,2-Dioxaphosphorinane] 2,2'-Dioxide
CAS No.	58948-14-4
Molecular Formula	C₁₂H₁₈Br₄O₈P₂
Molecular Weight	689.76 g/mol
Synonyms	Bis(5,5-bis(bromomethyl)-1,3,2-dioxaphosphorinane 2-oxide) ether; FR-522; Tetrabromoneopentyl diphosphate; 1,3,2-Dioxaphosphorinane, 2,2'-oxybis[5,5-bis(bromomethyl)-, 2,2'-dioxide; Brominated neopentyl phosphate ether; Reactive brominated phosphate ester flame retardant
EINECS	Contact for details

Quality Control

Our production of 2,2'-Oxybis[5,5-Bis(Bromomethyl)-1,3,2-Dioxaphosphorinane] 2,2'-Dioxide adheres to a strict quality management system. Every batch undergoes rigorous analytical testing, including assay, bromine content, and impurity profile analysis, to ensure consistency and performance. Certificates of Analysis (COA) detailing all specifications are provided with each shipment to guarantee supply reliability and product integrity for your manufacturing processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at room temperature (15-25°C). Keep away from strong bases and sources of heat. This material is hygroscopic (moisture-sensitive); ensure containers are sealed after use to prevent degradation.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 98.0%
Bromine Content	46.0 - 47.0 %
Phosphorus Content	8.8 - 9.2 %
Melting Point	105 - 115 °C
Loss on Drying	≤ 0.5 %
Heavy Metals (as Pb)	≤ 10 ppm

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