Product Overview

Potassium Oxalate Monohydrate 99.5% AR/ACS (CAS No. 6487-48-5) is the hydrated dipotassium salt of oxalic acid and provides the divalent oxalate ligand in aqueous analytical media. Oxalate forms complexes with many metal ions and precipitates selected cations as poorly soluble oxalate salts, while its reducing behaviour can also be exploited in suitable redox systems. These properties give the reagent recognised roles in classical inorganic analysis and metal-ion chemistry.

The AR/ACS grade is positioned for conventional precipitation, complexation, wet-chemical reagent preparation and quality-control procedures.

Typical Applications

• Precipitation of calcium and other suitable metal ions as sparingly soluble oxalates.
• Preparation of oxalate reagent solutions for conventional inorganic analysis.
• Metal-ion complexation and masking studies involving oxalate.
• Gravimetric or precipitation-based method development where potassium oxalate is specified.
• Redox procedures and reaction studies in which oxalate functions as a reducing ligand or reagent.
• Laboratory QC and method-verification work involving metal–oxalate equilibria.

Common Synonyms

• Dipotassium oxalate monohydrate
• Oxalic acid dipotassium salt monohydrate
• Dipotassium ethanedioate monohydrate
• Potassium oxalate hydrate
• Dipotassium oxalate hydrate

Storage Conditions

Store tightly closed and minimise uncontrolled moisture exchange to preserve the defined monohydrate state and reproducibility of weighed analytical preparations. Protect the reagent from contamination by polyvalent metal ions because such contamination can consume oxalate through complexation or precipitation.