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.
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