| Subject | English | French |
| chem. | complexing agent | complexant |
| environ. | complexing agent A substance capable of forming a complex compound with another material in solution | agent complexant |
| chem. | complexing agent | agent complexant |
| chem. | complexing power | pouvoir complexant |
| chem. | organic complexing agent | agent de complexation organique |
| energ.ind., chem. | organic complexing agent | agent complexant organique |
| chem. | selective complexing agent | complexant sélectif |