普施安型活性染料,一般具有二氯三氮苯环结构。关于有效氯测定,据苏联化学家伏洛卓夫报导,可按下法进行: 一、有效氯的测定:将活性染料0.5克,溶于50c.c.水中,加入氢氧化钠1克,在迴流冷凝器下迴流二小时(水浴沸腾,反应物则不沸),冷却,冲淡至200c.c.,加入稀硝酸(C.P.)至呈酸性,然后在电位滴定仪 Pu the Ann-type reactive dyes, generally have a dichlorotriazine benzene ring structure. On the determination of available chlorine, according to the Soviet chemist Fola Zhuofu reported, according to the following method: First, the determination of available chlorine: The reactive dye 0.5 grams, dissolved in 50c.c. water, add sodium hydroxide 1 g, at reflux The condenser was refluxed for two hours (water bath boiling, the reaction is not boiling), cooled, diluted to 200c.c., dilute nitric acid (CP) to acidic, and then potentiometric titrator