Thionyl chloride (CAS 7719-09-7) Market Research Report 2026 '@aboutThionyl chloride (sulfinyl chloride, sulfur oxychloride, thionyl dichloride, sulfurous dichloride) refers to an inorganic compound with the molecular formula Cl2OS. Thionyl chloride is a colorless to pale or reddish, non-flammable, distillable ...