Complexometric titration is a volumetric technique that involves using a chelating agent, like EDTA-Na2, to form stable complexes with metal ions in a solution. This approach is widely employed to determine the concentration of metal ions by quantifying the volume of titrant needed to fully react with the metal ions.
Why determine the titer value of EDTA-Na2
Establishing the titer of EDTA-Na2 is vital to accurately determine the true concentration of the titrant applied in complexometric titrations. Ensuring this precision is key to obtaining dependable measurements of metal ions like calcium across diverse sectors such as pharmaceuticals, environmental monitoring, and the food and beverage industry.
How to determine the titer value of EDTA-Na2
The titer value of EDTA-Na2 is determined by titrating a primary standard solution of calcium carbonate (CaCO3) using EDTA-Na2, both at 0.01 mol/L concentration. The titration is performed in a buffered pH 10 environment, adding EDTA gradually under constant stirring until the endpoint is identified potentiometrically. Ensuring the sensor is clean and free of air bubbles is crucial for accurate results. This method provides precise and consistent titer values, supporting reliable quality control.
