Carboxymethyl starch with degree of substitution(DS)0 6 has been made from corn starch,chloroacetic acid and sodium hydroxide,and with ethyl alcohol as solvent.

• 用玉米淀粉、氯乙酸和氢氧化钠为原料，在乙醇溶剂中反应制备了取代度为0．6的羧甲基淀粉。