Acetic acid is one of myriad organic acids. What about other acids? As I found before ammonium citrate increases gypsum solubility as well. I searched for possible organic acids on Wikipedia. I preffered monocarboxylic acids because they form only one type of salts, and this is simpler to understand. For example, tartaric acid is dicarboxylic, it can form tartrate and bitartrate, and this is more difficult to understand.
I found lactic acid on Wikipedia. It is pretty safe, not toxic, high boiling, calcium lactate is soluble, and it can be purchased. So, I decided to experiment with ammonium lactate.
The first experiment is dissolving gypsum in ammonium lactate in order to estimate its chelating properties. The second experiment is dissolving CaCO3 in ammonium lactate.
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