Description

o-Methyl-o-Ethylchlorothiophosphate is a key organophosphorus intermediate with significant industrial utility. Its value lies in its role as a versatile building block for the synthesis of more complex agrochemicals and other specialty chemicals. This compound is primarily needed by manufacturers in the agrochemical, pharmaceutical, and fine chemical sectors for research and production processes.

Application

• Primary intermediate in the synthesis of organophosphate insecticides and pesticides.
• Key building block for the production of specific nerve agent antidotes and related pharmaceutical compounds.
• Used in research and development of novel crop protection agents.
• Intermediate in the manufacture of flame retardants and plasticizers.
• Employed in the synthesis of ligands for metal extraction and catalysis.
• Starting material for the preparation of other thiophosphoryl chloride derivatives.

Basic Information

Product Name	o-Methyl-o-Ethylchlorothiophosphate
CAS No.	13289-13-9
Molecular Formula	C3H8ClO2PS
Molecular Weight	174.58 g/mol
Synonyms	O-Methyl O-Ethyl Chlorothiophosphate; O,O-Dimethyl O-Ethyl Phosphorochloridothioate; Ethyl Methyl Chlorothiophosphate; Chlorothiophosphoric Acid O-Methyl O-Ethyl Ester; Phosphorochloridothioic Acid, O-Methyl O-Ethyl Ester; Methyl Ethyl Chlorothiophosphate; 13289-13-9
EINECS	Contact for details

Quality Control

Our o-Methyl-o-Ethylchlorothiophosphate is produced under stringent quality management systems. Each batch undergoes rigorous analytical testing, including chromatographic purity analysis and identity confirmation, to ensure it meets precise customer specifications and industry standards. A comprehensive Certificate of Analysis (COA) detailing all test results is provided with every shipment.

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 and oxidizing agents. Due to its nature as a strong acid/organic solvent and highly volatile compound, appropriate secondary containment and vapor control measures are recommended. Recommended storage temperature: 2-8°C for extended stability.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (GC)	≥ 95.0%
Water Content (KF)	≤ 0.5%
Density (at 20°C)	~1.30 g/cm³
Related Impurities (GC)	≤ 3.0% total

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