Solubilities in Aqueous Solutions of Ammonium Sulfate and Potassium Salts of Malonic, Succinic, or Glutaric Acid.

ABSTRACT: The aqueous solubility of the least soluble salt was studied in mixtures of ammonium sulfate and one of the following organic acids in either a 1:1 or 2:1 ratio with KOH:malonic acid, succinic acid, and glutaric acid. Solubility temperatures were determined in solutions of known concentrations using differential scanning calorimetry. The identity of the least soluble solid was determined by a combination of X-ray crystallography and infrared spectroscopy. The identified solids were found to be potassium sulfate (19% of samples), ammonium sulfate (5% of samples), and compounds with varying ratios of NH₄⁺/K⁺ with SO₄^2- (76% of samples). The organic fraction of solutions appeared to have no impact on the identity of the least soluble soli

SUBMITTER: Beyer KD 

PROVIDER: S-EPMC12400424 | biostudies-literature | 2025 Aug

REPOSITORIES: biostudies-literature