what is the difference between disodium edta and tetrasodium edta?
The key difference between disodium EDTA and tetrasodium EDTA is that disodium EDTA has a pH lower than 7 while tetrasodium EDTA has a pH greater than 7. EDTA is a chelating agent. Therefore, it has the potential to bind with metal ions such as calcium and magnesium. ... Both types are sodium salts of EDTA.