Description

Methylphosphonic Dichloride is a highly reactive organophosphorus compound primarily used as a key synthetic intermediate. Its value lies in its ability to efficiently introduce the methylphosphonyl group, a crucial building block in advanced chemical synthesis. This product is essential for manufacturers in the agrochemical, pharmaceutical, and specialty chemical industries seeking to develop complex molecules.

Application

• Agrochemical Synthesis: A critical precursor in the production of organophosphorus herbicides, insecticides, and plant growth regulators.
• Pharmaceutical Intermediates: Used in the synthesis of nucleotide analogs, prodrugs, and other bioactive molecules containing phosphonate groups.
• Flame Retardant Production: Serves as a starting material for certain phosphorus-based flame retardant additives used in polymers and textiles.
• Ligand and Catalyst Preparation: Employed in the synthesis of specialized phosphonate ligands for metal catalysis and coordination chemistry.
• Chemical Research & Development: A versatile reagent in academic and industrial R&D for constructing novel organophosphorus compounds.
• Surface Modification Agents: Used to create phosphonate-based self-assembled monolayers (SAMs) on metal oxide surfaces for corrosion inhibition or functionalization.

Basic Information

Product Name	Methylphosphonic Dichloride
CAS No.	676-97-1
Molecular Formula	CH3Cl2OP
Molecular Weight	132.91 g/mol
Synonyms	Methylphosphonyl Dichloride; Methanephosphonic Dichloride; Methylphosphonic Acid Dichloride; Dichloro(methyl)phosphine Oxide; NSC 88166; Methylphosphonoyl Dichloride; Methyl-Dichlorophosphine Oxide
EINECS	211-634-6

Quality Control

Our Methylphosphonic Dichloride is manufactured under stringent process controls to ensure batch-to-batch consistency and high purity. Quality is verified through comprehensive analytical testing including gas chromatography (GC) and NMR spectroscopy. A Certificate of Analysis (COA) detailing purity, identity, and impurity profiles is provided with each shipment to support your quality assurance protocols.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials such as strong bases, alcohols, and water. Due to its hygroscopic and moisture-sensitive nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent hydrolysis. Recommended storage temperature is 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (GC)	≥ 98.0%
Density (at 20°C)	~1.48 g/cm³
Boiling Point	~161-162°C

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