Description

Methyl Phosphonothioic Dichloride is a key organophosphorus intermediate with significant utility in advanced chemical synthesis. Its primary value lies in its role as a versatile building block for the production of specialized compounds, including certain pesticides and flame retardants. This product is essential for R&D laboratories and industrial manufacturers in the agrochemical and specialty chemical sectors seeking to develop novel active ingredients and functional materials.

Application

• Agrochemical Intermediate: A critical precursor in the synthesis of organophosphorus insecticides and herbicides.
• Flame Retardant Synthesis: Used in the manufacturing of specialized phosphorus-based flame retardant additives for polymers.
• Pharmaceutical Research: Serves as a building block in medicinal chemistry for the development of novel drug candidates and bioactive molecules.
• Ligand and Catalyst Preparation: Employed in the synthesis of phosphorus-containing ligands for metal catalysis and coordination chemistry.
• Chemical Synthesis: A versatile reagent for introducing the methylphosphonothioyl group into target molecules in organic and organometallic synthesis.

Basic Information

Product Name	Methyl Phosphonothioic Dichloride
CAS No.	676-99-3
Molecular Formula	CH3Cl2OPS
Molecular Weight	164.97 g/mol
Synonyms	Methylphosphonothioic Dichloride; Methylphosphonothioyl Dichloride; Dichloro(methyl)phosphine Sulfide; Methylphosphonothioic Acid Dichloride; Thiophosphonic Acid, Methyl-, Dichloride; Methyl Thiophosphonic Dichloride; CH3P(S)Cl2
EINECS	211-638-5

Quality Control

Our Methyl Phosphonothioic Dichloride is produced under stringent quality management protocols. Each batch undergoes comprehensive analytical testing, including chromatography and spectroscopy, to ensure high purity and consistency. A detailed Certificate of Analysis (COA) is provided with every shipment, confirming compliance with agreed specifications.

Storage

Preserve in a tightly closed container, protected from light. Store in a cool, dry, well-ventilated area away from incompatible materials. Due to its hygroscopic and strong acid/organic solvent nature, containers must be kept tightly sealed under an inert atmosphere (e.g., nitrogen or argon) to prevent moisture absorption and decomposition. Recommended storage temperature is 2-8°C for long-term stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Purity (GC)	≥ 97.0%
Water Content (KF)	≤ 0.5%

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