次氯酸 Traditional form: 次氯酸 Pinyin (reading): cìlüsuān Definitions: hypochlorous acid HOCl (bleach) Characters: 次 - order, sequence; second, next; one after the other 氯 - chlorine 酸 - tart, sour; spoiled; acid Traditional characters: 次 - order, sequence; second, next; one after the other 氯 - chlorine 酸 - tart, sour; spoiled; acid