Description

4,9-Dihydroxy-3,5,8,10-Tetraoxa-4,9-Diphosphadodecane-1,12-Diol 4,9-Dioxide is a specialized organophosphorus compound, specifically a bisphosphonate ester derivative, known for its unique chelating and flame-retardant properties. This chemical matters for its ability to impart enhanced thermal stability and flame resistance to polymer matrices while also serving as a versatile intermediate for further synthesis. Industries requiring high-performance additives, such as polymer manufacturing, advanced material science, and specialty chemical synthesis, rely on this compound for developing next-generation materials.

Application

• Flame Retardant Additive for engineering plastics, polyurethanes, and epoxy resins.
• Chelating Agent and intermediate in the synthesis of complex organophosphorus ligands.
• Polymer Modifier to enhance thermal stability and char formation in fire-resistant coatings and textiles.
• Cross-linking Agent in specialty adhesive and sealant formulations.
• Precursor for pharmaceutical and agrochemical active ingredients requiring a phosphonate backbone.
• Stabilizer in polymer processing to prevent thermal degradation.
• Research & Development chemical for academic and industrial laboratories exploring new material properties.

Basic Information

Item	Details
Product Name	4,9-Dihydroxy-3,5,8,10-Tetraoxa-4,9-Diphosphadodecane-1,12-Diol 4,9-Dioxide
CAS No.	34994-91-7
Molecular Formula	C6H16O10P2
Molecular Weight	310.14 g/mol
Synonyms	Bis(2-hydroxyethyl) methylenediphosphonic acid; BHEDP; 1-Hydroxyethane-1,1-diphosphonic acid, 2-hydroxyethyl ester; Methylene diphosphonic acid bis(2-hydroxyethyl) ester; Ethanol, 2,2'-[methylenebis(phosphono)]bis-; Phosphonic acid, P,P'-[methylenebis(2-hydroxyethyl ester)]; HEDP ester derivative
EINECS	Contact for details

Quality Control

Our production of 4,9-Dihydroxy-3,5,8,10-Tetraoxa-4,9-Diphosphadodecane-1,12-Diol 4,9-Dioxide adheres to stringent quality management protocols. Every batch undergoes rigorous analytical testing to ensure identity, purity, and consistency meet the required specifications. Certificates of Analysis (COA) documenting key parameters are available upon request, providing full traceability and supporting your quality assurance processes.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, and well-ventilated area at a controlled room temperature (15-25°C). Due to its hygroscopic (moisture-sensitive) nature, the container must be kept tightly sealed after opening to prevent degradation from atmospheric moisture. Keep away from incompatible materials.

Specification

Item	Specification
Appearance	White to off-white crystalline powder
Identification (IR)	Conforms to reference spectrum
Assay (HPLC)	≥ 98.0%
Water Content (KF)	≤ 2.0%
Melting Point	Contact for details
Heavy Metals (as Pb)	≤ 10 ppm

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