Description

2,2'-Oxybis[5,5-Dimethyl-1,3,2-Dioxaphosphorinane] 2,2'-Dioxide is a high-purity, cyclic phosphonate compound, also known as a bridged bisphosphonate. This specialty chemical serves as a highly effective flame retardant synergist and thermal stabilizer, enhancing the performance of primary halogenated or phosphorus-based flame retardants. It is primarily required by manufacturers in the polymer, plastics, and advanced material industries seeking to improve fire safety and thermal stability in their products.

Application

• Flame Retardant Synergist in engineering plastics (e.g., polycarbonate, PBT, PET) and thermoset resins.
• Thermal Stabilizer for polymers, helping to prevent degradation during high-temperature processing.
• Component in intumescent coating formulations for steel and construction materials.
• Additive for fire-resistant cables and wire insulation.
• Use in flame-retardant polyurethane foams for furniture and insulation.
• Potential intermediate for the synthesis of other specialty phosphonate compounds.
• Research and development of advanced composite materials with enhanced fire performance.

Basic Information

Product Name	2,2'-Oxybis[5,5-Dimethyl-1,3,2-Dioxaphosphorinane] 2,2'-Dioxide
CAS No.	4090-52-2
Molecular Formula	C₁₀H₂₀O₇P₂
Molecular Weight	338.21 g/mol
Synonyms	Bis(5,5-dimethyl-1,3,2-dioxaphosphorinanyl) ether dioxide; 2,2'-Oxybis(5,5-dimethyl-1,3,2-dioxaphosphorinane 2-oxide); Bridged Dimethyl Dioxaphosphorinane Dioxide; Flame Retardant BDPO; FR Synergist 4090-52-2; 5,5-Dimethyl-1,3,2-dioxaphosphorinane, 2,2'-oxybis-, 2,2'-dioxide
EINECS	Contact for details

Quality Control

Our production of 2,2'-Oxybis[5,5-Dimethyl-1,3,2-Dioxaphosphorinane] 2,2'-Dioxide adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing, including chromatography and spectroscopy, to ensure high purity and consistent performance as a flame retardant additive. Certificates of Analysis (COA) detailing purity, moisture content, and other critical parameters are available upon request.

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 incompatible materials. For long-term storage, consider 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	Contact for details
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.