Description

Thionyl Chloride is a versatile and highly reactive inorganic acid chloride with the CAS number 7719-09-7. It serves as a critical reagent for introducing chlorine atoms and sulfur-oxygen bonds, enabling efficient synthesis and modification of complex molecules. This compound is essential for manufacturers and R&D teams in the pharmaceutical, agrochemical, and specialty chemical industries seeking reliable and high-purity chlorination and dehydration agents.

Application

• Pharmaceutical Intermediate Synthesis: A key reagent for chlorination reactions in the production of active pharmaceutical ingredients (APIs) and fine chemicals.
• Agrochemical Manufacturing: Used in the synthesis of herbicides, insecticides, and fungicides, where it acts as a chlorinating and dehydrating agent.
• Dye and Pigment Production: Facilitates the chlorosulfonation of aromatic compounds, a critical step in manufacturing certain dyes and pigments.
• Polymer Chemistry: Employed as a modifying agent for polymers and in the production of acid chlorides from carboxylic acids for subsequent polymerization.
• Lithium Battery Electrolytes: Used in the formulation of electrolytes for lithium-thionyl chloride (Li-SOCl₂) batteries.
• Chemical Reagent: A fundamental laboratory reagent for organic synthesis, particularly in converting carboxylic acids to acyl chlorides and alcohols to alkyl chlorides.

Basic Information

Product Name	Thionyl Chloride
CAS No.	7719-09-7
Molecular Formula	SOCl₂
Molecular Weight	118.97 g/mol
Synonyms	Sulfurous Oxychloride; Sulfinyl Chloride; Thionyl Dichloride; Sulfur Monoxide Dichloride; Sulfurous Dichloride Oxide; SOCI2; SOCl2
EINECS	231-748-8

Quality Control

Our Thionyl Chloride is manufactured under stringent quality management systems to ensure batch-to-batch consistency and high purity. The product undergoes rigorous analytical testing, including assay by titration and impurity profiling, to meet exacting industry standards. A comprehensive Certificate of Analysis (COA) detailing purity, identity, and specific test results is provided with each 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 water, bases, and oxidizing agents. Due to its hygroscopic and highly volatile nature, containers must be kept tightly sealed under dry conditions. Recommended storage temperature is 15-25°C.

Specification

Item	Specification
Appearance	Colorless to pale yellow liquid
Identification (IR)	Conforms
Assay (SOCl₂)	≥ 99.0 %
Density (at 20°C)	1.638 - 1.645 g/mL
Boiling Point	74 - 76 °C

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