Methylene-bis[(aminomethyl)phosphinic acid] is a polyprotic acid, meaning it can donate multiple protons (H+ ions) to solution. It has two acidic protons to donate, and its acid-base properties are pH-dependent. The pKa values of MBPA vary depending on the specific conditions, but generally, they are around 1.6 and 2.5. This compound can form salts and complexes with various metal ions due to its acid-base properties.
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