21. It functions as a siderophore, a small chelating agent with a high affinity for iron. 22. Other substances called chelating agents keep the water clear. 23. It also dissolves well in solutions of the chelating agents such as EDTA and oxalic acid. 24. When metal ions are present in high concentrations, use of a chelating agent may be necessary. 25. Therefore, ACE can be inhibited by metal-chelating agents . 26. In detergents they are used as a combination of chelating agent , scale inhibitor, and bleach stabilizer. 27. EDTA is a metal chelating agent and is commonly used in foods to prevent oxidative rancidity. 28. Other processes include precipitation and complexation of surfactants, or chelating agents that bind to radioactive elements. 29. Water containing these chelating agents can leach metal from water treatment equipment as well as pipes. 30. However, an alternate hypothesis as to how they work is that they act as chelating agents .
