Product Overview

Potassium Metaperiodate 99.5% AR (CAS No. 7790-21-8) is a high-valent iodine(VII) oxidising reagent whose periodate anion reacts predictably with a range of oxidisable functional groups. Its particularly well-established reaction with vicinal diols and related polyhydroxy structures permits conversion to carbonyl products and provides a basis for numerous analytical oxidation and derivatisation procedures.

The AR grade is intended for conventional analytical oxidation, spectrophotometric reagent systems, sample derivatisation and laboratory QC where potassium metaperiodate is specified. 

Typical Applications

• Periodate oxidation steps in spectrophotometric and colorimetric analytical methods.
• Oxidative derivatisation of compounds containing suitable vicinal diol or related functionality.
• Analytical determination of polyols and carbohydrate-related substances after periodate oxidation.
• Generation of carbonyl derivatives for subsequent analytical reaction.
• Preparation of periodate oxidising reagent solutions.
• QC and method-development studies involving controlled iodine(VII) oxidation.

Common Synonyms

• Potassium periodate
• Potassium metaperiodate
• Potassium periodate(VII)
• Periodic acid potassium salt
• Potassium tetraoxidoiodate(VII)

Storage Conditions

Keep tightly closed and dry, and prevent contamination by reducing substances or organic residues capable of consuming periodate. Use clean analytical tools and reseal promptly so that oxidation capacity and reagent blanks remain consistent.