Potassium Nitrate

IUPAC Name

:   Potassium Nitrate

Cas Number

:   7757-79-1

HS Code

:   2834.21.00

Formula

:  

KNO3

Basic Information

Appearance Name

:   White Crystalline Powder

Common Names

:   Saltpeter Nitre

Packaging

:   25 Kg Net PP/PE, 50 Kg Woven Bag

Category
Preservatives
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Technical Document

Brief Overview

Potassium nitrate is a major source of nitrogen and is commonly known as saltpetre. Potassium nitrate is a orthorhombic crystal structure at room temperature, then changes to trigonal state at higher temperature. It is highly soluble in water and as temperature increases, solubility increases. It is insoluble in alcohol and can react explosively with reducing agents, but it is not explosive on its own.

Manufacturing Process

In earlier times, potassium nitrate was obtained from natural mineral sources and from caves. Nowadays, the production of potassium nitrate is done by making ammonium nitrate react with potassium hydroxide.

NH4NO3 (aq) + KOH (aq) → NH3 (g) + KNO3 (aq) + H2O (l)

For industrial scale, sodium nitrate and potassium chloride are reacted together to produce potassium nitrate and sodium chloride.

NaNO3 (aq) + KCl (aq) → NaCl (aq) + KNO3 (aq)

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