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7757-79-1
KNO3
19070800PD
99%-99.995%
-325 Mesh
231-818-8
Class 5.1
UN1486
PG III
Characteristic
Potassium nitrate is a chemical compound with the chemical formula KNO3. It is an ionic salt of potassium ions K+ and nitrate ions NO3−, and is therefore an alkali metal nitrate.It occurs in nature as a mineral, niter. It is a source of nitrogen, from which it derives its name. Potassium nitrate is one of several nitrogen-containing compounds collectively referred to as saltpeter or saltpetre.It is one of the major constituents of gunpowder (black powder).
Chemical formula:KNO3
Molar mass:101.1032 g/mol
Appearance:white solid
Odor:odorless
Density:2.109 g/cm3 (16 °C)
Melting point:334 °C (633 °F; 607 K)
Boiling point:400 °C (752 °F; 673 K) (decomposes)
Solubility in water:133 g/L (0 °C);242 g/L (20 °C);2439 g/L (100 °C)
Solubility:slightly soluble in ethanol;soluble in glycerol, ammonia
Basicity (pKb):15.3
Magnetic susceptibility (χ):−33.7·10−6 cm3/mol
Refractive index (nD):1.335, 1.5056, 1.5604
Crystal structure:Orthorhombic, Aragonite
Application
Potassium nitrate has several applications. It is used as an oxidizer, food preservative, fertilizer, and an active ingredient of condensed aerosol fire suppression systems. It is a powerful nitrating agent in sulfuric acid medium. In addition, it also used as an electrolyte in a salt bridge and thermal storage medium in power generation systems. Ternary salts containing potassium nitrate have been reported to improve the heat storage capacity in the molten salts.
Characteristic
Potassium nitrate is a chemical compound with the chemical formula KNO3. It is an ionic salt of potassium ions K+ and nitrate ions NO3−, and is therefore an alkali metal nitrate.It occurs in nature as a mineral, niter. It is a source of nitrogen, from which it derives its name. Potassium nitrate is one of several nitrogen-containing compounds collectively referred to as saltpeter or saltpetre.It is one of the major constituents of gunpowder (black powder).
Chemical formula:KNO3
Molar mass:101.1032 g/mol
Appearance:white solid
Odor:odorless
Density:2.109 g/cm3 (16 °C)
Melting point:334 °C (633 °F; 607 K)
Boiling point:400 °C (752 °F; 673 K) (decomposes)
Solubility in water:133 g/L (0 °C);242 g/L (20 °C);2439 g/L (100 °C)
Solubility:slightly soluble in ethanol;soluble in glycerol, ammonia
Basicity (pKb):15.3
Magnetic susceptibility (χ):−33.7·10−6 cm3/mol
Refractive index (nD):1.335, 1.5056, 1.5604
Crystal structure:Orthorhombic, Aragonite
Application
Potassium nitrate has several applications. It is used as an oxidizer, food preservative, fertilizer, and an active ingredient of condensed aerosol fire suppression systems. It is a powerful nitrating agent in sulfuric acid medium. In addition, it also used as an electrolyte in a salt bridge and thermal storage medium in power generation systems. Ternary salts containing potassium nitrate have been reported to improve the heat storage capacity in the molten salts.
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