Thionyl chloride CAS 7719-09-7

CAS No.7719-09-7
Other Name:Thionyl dichloride
MF:Cl2OS

Thionyl chloride, with the CAS number 7719-09-7, is an inorganic compound represented by the chemical formula SOCl₂. It is a colorless to yellowish liquid that has a pungent odor reminiscent of sulfur dioxide. This compound is known for its moderate volatility and is commonly used in various chemical reactions, particularly as a chlorinating agent.
Properties of Thionyl Chloride
Molecular Weight: 118.97 g/mol
Density: 1.638 g/cm³
Melting Point: -104.5 °C
Boiling Point: 74.6 °C
Solubility: Thionyl chloride is soluble in most aprotic solvents and reacts with protic solvents like water and alcohols, producing toxic gases.
Uses
Thionyl chloride is widely utilized in organic synthesis for:
Converting alcohols to alkyl chlorides.
Transforming carboxylic acids into acid chlorides.
Acting as a chlorinating agent in the production of organochlorine compounds.
Safety Information
Thionyl chloride is highly corrosive and poses several health risks. It can cause severe burns upon contact with skin or eyes and may lead to respiratory irritation if inhaled. Precautions should be taken to avoid exposure, including the use of appropriate personal protective equipment (PPE) and working in a well-ventilated area.
In summary, thionyl chloride is a versatile and important reagent in organic chemistry, but it must be handled with care due to its hazardous nature.