[200697-250G] Ethyl cellulose viscosity 22 cP, 5 % in toluene/ethanol 80:20(lit.), extent of labeling: 48% ethoxyl + 238,150원
[200697-500G] Ethyl cellulose viscosity 22 cP, 5 % in toluene/ethanol 80:20(lit.), extent of labeling: 48% ethoxyl + 390,170원