Dictionary entry

Ethylsulphuric

Webster's Dictionary 1913

Eth′yl‐sul‐phu″ric (?) a.(Chem.) Pertaining to, or containing, ethyl and sulphuric acid.

Ethylsulphuric acid(Chem.), an acid sulphate of ethyl, H.C2H5.SO4, produced as a thick liquid by the action of sulphiric acid on alcohol. It appears to be the active catalytic agent in the process of etherification.