Ethyl cellulose ether yog cov khoom siv polymer nrog cov tshuaj formula (C12H22O5)n, uas yog cov hmoov dawb lossis lub teeb xim av ntawm chav tsev kub.
Ethyl cellulose yog ethyl ether ntawm cellulose, ib tug ntev-chain polymer nrog -anhydroglucose li ib chav tsev txuas los ntawm acetal, thiab yog ib qho ntawm feem ntau siv dej-insoluble cellulose derivatives.