A sequestering agent USES chelation to separate the iron cation from the anion by chelating to prevent the formation of iron hydroxide during acidizing.
螯合剂利用螯合作用使铁离子(阳离子)与阴离子分离，以防止在酸化作业期间生成氢氧化铁。
An acid additive used in acidizing that is either a a sequestering agent used to complex iron ions orb a reducing agent such as erythorbic acid used to reduce the oxidized state of iron.
在酸化作业中所用的一种酸添加剂。它可为用于络合铁离子的螯合剂，或为用于使氧化状态的铁还原的还原剂(如赤藓酸)。
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