CAS Registry Number

CAS 7719-09-7 — Thionyl chloride

Thionyl chloride is a highly reactive inorganic compound (SOCl₂) widely used in organic synthesis to convert carboxylic acids, alcohols, and amides into their corresponding acid chlorides, amines, or other derivatives. It is also employed in chlorination reactions and as a dehydrating agent. This colorless to yellowish liquid has a pungent odor and must be handled with care due to its corrosive and toxic properties. Thionyl chloride has a CAS number of 7719-09-7, a molecular weight of 118.97 g/mol, and is typically stored at ambient conditions. It carries a **Danger** signal word under GHS classification due to its severe hazards. Molekula supplies thionyl chloride from research to bulk quantities with full documentation and ISO 9001:2015 traceability.

Also known as: Thionyl chloride, 1M soln. in dichloromethane · Thionyl chloride 99.6%