Chelating Agents

The presence of high concentrations of chelating agents in the radwaste may have an effect on waste-site stability. All waste containing chelating agents shall indicate the name and weight percentage of any chelating agents that are present in excess of 0.1% by weight.

Chelating agents are amine polycarboxlic acids (e.g., EDTA, DTPA) and hydroxy-carboxylic acids (e.g., citric acid and glucinic acid) used for the purpose of binding (i.e. to stabilize radioactive materials).