Description

O,S-Diethyl Methylphosphonothioate is an important organophosphorus chemical intermediate with the CAS registry number 2511-10-6. This compound is valued for its role as a key precursor in the synthesis of specialized agrochemicals and other fine chemicals. It is primarily required by manufacturers in the agrochemical, pharmaceutical, and chemical research sectors for developing advanced active ingredients and novel compounds.

Application

• Agrochemical Intermediate: A critical building block in the synthesis of organophosphate insecticides and pesticides.
• Chemical Synthesis: Serves as a versatile precursor for creating complex phosphonothioate esters and related derivatives in research and development.
• Pharmaceutical Research: Used in the development of novel compounds with potential biological activity.
• Ligand and Catalyst Preparation: Employed in the preparation of specialized ligands for coordination chemistry and catalytic applications.
• Flame Retardant Synthon: Acts as an intermediate in the production of certain flame-retardant additives.
• Material Science: Utilized in the synthesis of functionalized materials and surface-modifying agents.

Basic Information

Product Name	O,S-Diethyl Methylphosphonothioate
CAS No.	2511-10-6
Molecular Formula	C5H13O2PS
Molecular Weight	168.19 g/mol
Synonyms	Methylphosphonothioic Acid O,S-Diethyl Ester; Diethyl Methylphosphonothioate; O,S-Diethyl Methylphosphonothiolate; Phosphonothioic Acid, Methyl-, O,S-Diethyl Ester; ENT 25671; NSC 42051
EINECS	219-737-8

Quality Control

Our O,S-Diethyl Methylphosphonothioate is manufactured under strict quality management systems. Each batch undergoes comprehensive analytical testing, including chromatographic purity analysis and identity confirmation, to ensure it meets precise customer specifications and industry standards. A 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 organic solvents. Recommended storage temperature is between 2°C and 8°C for extended stability, although short-term storage at controlled room temperature (15-25°C) is acceptable. Keep container tightly sealed when not in use to prevent moisture absorption and degradation.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms to structure
Assay (HPLC)	≥ 97.0%
Water Content (KF)	≤ 0.5%
Related Substances (HPLC)	Total impurities ≤ 3.0%
Specific Gravity (20°C)	1.100 - 1.150

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