| Subject | English | Dutch |
| chem. | complexing agent | complexvormer |
| environ. | complexing agent A substance capable of forming a complex compound with another material in solution | complexvormer |
| chem. | complexing agent | complexvormend middel |
| chem. | organic complexing agent | organische complexvormer |
| chem. | selective complexing agent | selectief afscheidingsmiddel |