Sulphuryl \Sul"phur*yl\, n. [Sulphur + -yl.] (Chem.)
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}.
[1913 Webster]