Product Overview

Potassium Nitrate 99% AR (CAS No. 7757-79-1) is a soluble inorganic nitrate salt providing a defined source of nitrate and potassium ions for conventional analytical chemistry. Its chemical stability and well-defined stoichiometry make potassium nitrate useful in preparation of nitrate reagent, calibration and working solutions when the applicable method permits reagent-grade material.

The AR grade is positioned for routine water analysis, preparation of non-certified nitrate solutions, ionic-strength adjustment and laboratory quality-control work.

Typical Applications

• Preparation of non-certified nitrate stock and working solutions in methods where reagent-grade potassium nitrate is specified.
• Nitrate calibration and method-development solutions for water-analysis procedures.
• Preparation of nitrate-containing ionic media for electrochemical measurements.
• Adjustment of ionic strength in compatible analytical experiments.
• Laboratory QC and method verification involving nitrate determinations.
• Conventional analytical reagent preparation requiring potassium nitrate.

Common Synonyms

• Saltpetre
• Saltpeter
• Nitre
• Nitric acid potassium salt
• Potassium nitrate

Storage Conditions

Store tightly closed, dry and protected from contamination. For analytical use, prevent introduction of extraneous nitrate or other soluble salts that could bias blanks, working solutions or ionic-strength calculations.