Home
Resources
Publications
Solubility of the Sodium and Ammonium Salts of Oxalic Acid in Water With Ammonium Sulfate

Solubility of the Sodium and Ammonium Salts of Oxalic Acid in Water With Ammonium Sulfate

Lukas G Buttke, Justin R Schueller, Christian S Pearson, Keith D Beyer

J Phys Chem A. 2016 Aug 18;120(32):6424-33.

PMID: 27482644

Abstract:

The solubility of the sodium and ammonium salts of oxalic acid in water with ammonium sulfate present has been studied using differential scanning calorimetry, X-ray crystallography, and infrared spectroscopy. The crystals that form from aqueous mixtures of ammonium sulfate/sodium hydrogen oxalate were determined to be sodium hydrogen oxalate monohydrate under low ammonium sulfate conditions and ammonium hydrogen oxalate hemihydrate under high ammonium sulfate conditions. Crystals from aqueous mixtures of ammonium sulfate/sodium oxalate were determined to be ammonium oxalate monohydrate under moderate to high ammonium sulfate concentrations and sodium oxalate under low ammonium sulfate concentrations. It was also found that ammonium sulfate enhances the solubility of the sodium oxalate salts (salting in effect) and decreases the solubility of the ammonium oxalate salts (salting out effect). In addition, a partial phase diagram for the ammonium hydrogen oxalate/water system was determined.

Chemicals Related in the Paper:

Catalog Number	Product Name	Structure	CAS Number	Price
AP13814012	Ammonium-d8 sulfate		13814-01-2	Price

As a specialist in analytical chemical Products, Alfa Chemistry offers consumers a wealth of raw materials and a full range of technologies and services.

QUICK LINKS

HEADQUARTERS

Tel:

Fax:

Email: