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Potassium nitrate has a vast variety of applications. Appropriate preparations of potassium nitrate find use in fertilizers, food preservatives, tooth paste, rocket propellants and fireworks. In addition, it is also used as an electrolyte in a salt bridge, and as thermal storage medium in power generation systems. It forms phase change material with silica and alumina nanoparticles. In combination with boron trifluoride it forms an efficient reagent for nitration of aromatic compounds. Adsorption on alumina provides an environmentally benign aromatic nitrating agent.
In combination with BF3 etherate, aromatic rings are nitrated: Synthesis, 1087 (1992)._x000D_
In the presence of hydrated BF3, alkyl nitrates free of the nitrite can be prepared: Synthesis, 207 (1993)._x000D_
In combination with SO2Cl2, aromatic thiols are converted to sulfonyl chlorides: Chem. Lett., 1483 (1992)._x000D_
Chieruzzi, M.; Miliozzi, A.; Crescenzi, T.; Torre, L.; Kenny, J. M. A New Phase Change Material Based on Potassium Nitrate with Silica and Alumina Nanoparticles for Thermal Energy Storage. Nanoscale Res. Lett. 2015, 10, 273.
Nagayama, S.; Katoh, K.; Higashi, E.; Nakano, K.; Kumagae, K.; Habu, H.; Wada, Y.; Arai, M. Differential scanning calorimetry analysis of crystal structure transformation in spray-dried particles consisting of ammonium nitrate, potassium nitrate, and a polymer. J. Therm. Anal. Calorim. 2014, 118 (2), 1215-1219.
Wang, Y.; Huang, W. Y.; Chun, Y.; Xia, J. R.; Zhu, J. H. Dispersion of Potassium Nitrate and the Resulting Strong Basicity on Zirconia. Chem. Mater. 2001, 13 (2), 670-677.
Carrascull, A. L.; Ponzi, M. I.; Ponzi, E. N. Catalytic Combustion of Soot on KNO3/ZrO2 Catalysts. Effect of Potassium Nitrate Loading on Activity. Ind. Eng. Chem. Res. 2003, 42 (4), 692-697.
Hazard Statements: H272
May intensify fire; oxidizer.
Precautionary Statements: P210-P220-P221-P280-P370+P378q-P501c
Keep away from heat/sparks/open flames/hot surfaces. - No smoking. Keep/Store away from clothing/combustible materials. Take any precaution to avoid mixing with combustibles. Wear protective gloves/protective clothing/eye protection/face protection. In case of fire: Use CO2, dry chemical, or foam Dispose of contents/ container to an approved waste disposal plant