【摘要】 本文以保险粉力还原剂,在较温和的条件下进行化学还原脱色,使产品的碱煮色达到了要求。将原来的二步精制变为一步,减少了中间环节,节省了原材料,收率提高3%。更多还原

【Abstract】 In the mild condition, Sodium hydrosulfite is used as chemical reduction decoloranl for sodium of sulfadiazine.The color of boiling alkali for product is up to standard. When the two-step refined SD is prepared into onestep one, the raw materials and intermediate links will be saved. The yield of refined SD increases about 3 percent.更多还原