Description

Methylenebis(Phosphonic Dichloride) is a highly reactive organophosphorus compound primarily used as a key intermediate in the synthesis of complex phosphonates and flame retardants. Its value lies in its ability to introduce the methylenebis(phosphonate) moiety, a crucial structural component for creating chelating agents, scale inhibitors, and advanced polymer additives. This product is essential for manufacturers in the water treatment, polymer, and specialty chemical industries seeking to develop high-performance functional materials.

Application

• Key Intermediate for Phosphonate Synthesis: Serves as a critical building block for producing bisphosphonates and polyphosphonates used as scale and corrosion inhibitors in industrial water treatment systems.
• Flame Retardant Precursor: Used in the manufacture of reactive and additive flame retardants for engineering plastics, textiles, and coatings to meet stringent fire safety standards.
• Chelating Agent Production: A precursor for synthesizing powerful chelating agents utilized in detergent formulations, pulp & paper processing, and metal surface treatment.
• Pharmaceutical Intermediate: Employed in the research and development of bisphosphonate drugs for treating bone disorders such as osteoporosis.
• Polymer Modification: Incorporated into polymer backbones to impart flame retardancy, improved thermal stability, or metal-chelating properties to specialty resins and fibers.
• Metal Extraction & Recovery: Forms the basis of extractants used in hydrometallurgical processes for the selective separation and recovery of valuable metals.

Basic Information

Product Name	Methylenebis(Phosphonic Dichloride)
CAS No.	1499-29-2
Molecular Formula	C1H4Cl4O2P2
Molecular Weight	251.81 g/mol
Synonyms	Methylenediphosphonic Dichloride; Methylene Diphosphonyl Dichloride; (Dichlorophosphinyl)methanediphosphonic Dichloride; Methanediphosphonic Acid Tetrachloride; Tetrachloromethanediphosphonic Acid; Bis(phosphonic dichloride)methane; MBPCl; Methylene Bisphosphonyl Chloride
EINECS	216-099-8

Quality Control

Our production of Methylenebis(Phosphonic Dichloride) adheres to stringent quality management protocols to ensure batch-to-batch consistency and high purity. Each lot is analyzed using advanced techniques including GC, HPLC, and 31P NMR to verify identity, assay, and impurity profiles. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment to support your quality assurance and regulatory compliance needs.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area at temperatures between 2°C and 8°C (refrigerated) to minimize hydrolysis and degradation. Due to its highly reactive and hygroscopic nature, containers must be kept sealed under an inert atmosphere (e.g., nitrogen or argon) and away from moisture, strong bases, and alcohols.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 97.0%
Purity (HPLC)	≥ 96.0%
Water Content (Karl Fischer)	≤ 0.5%
Phosphorus Trichloride (GC)	≤ 1.0%
Methyl Phosphonic Dichloride (GC)	≤ 0.5%

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