| abstract |
(57) [Problem] To provide an environment-friendly chelating composition having excellent ability to form a chelate with a metal ion. SOLUTION: The following formula (I): (A is an imino group or an oxygen atom, R is a hydrogen atom or a hydroxyl group, n represents 0 or 1), and an aliphatic polycarboxylic acid or a salt thereof and a sugar or sugar acid having 4 to 12 carbon atoms, The above problem is solved by a chelating composition characterized in that it is contained in a proportion showing a synergistic effect. |