Word Study
sulphuryl
CIDE DICTIONARY
sulphuryl, n. [Sulphur + -yl.].
The hypothetical radical SO2 ; -- called also sulphon . [1913 Webster]
Sulphuryl chloride, a chloride, pungent, fuming liquid, SO2.Cl2 , obtained by the action of phosphorus pentachloride on sulphur trioxide. On treatment with water it decomposes into sulphuric and hydrochloric acids, and is hence called also sulphuric chloranhydride .
For further exploring for "sulphuryl" in Webster Dictionary Online