The magnesium salt of EDTA and disodium magnesium salt of EDTA are equivalent for the purpose of determining water hardness using complexiometric methods. While the magnesium salt aids in detecting the endpoint against Eriochrome Black T, it is not strictly necessary, as EDTA or its disodium salt can also be utilized effectively. Therefore, both forms can be used interchangeably in this context.
PREREQUISITESChemists, environmental scientists, and laboratory technicians involved in water quality analysis and those interested in complexometric titration methods.
Beautiful! Thank you for this!Borek said:For this purpose they are equivalent.
Not that this particular salt is really required, just EDTA (or disodium salt) can be used as well. Magnesium salt makes detection of the endpoint against the Eriochrome Black T easier.