Potassium Nitrate Kemal VATANSEVER 9-D 216
In 1270, by the chemist and engineer Hasan al-Rammah • In his book al-Furusiyyawa al-Manasib al-Harbiyya Origin of
First the purification of barud. • The manufacture of gunpowder and explosive devices. • From a Chinese origin for the gunpowder weapons about the book. • Potassium nitrate was called: • "Chinese snow" by Arabs • "Chinese salt" by Iranians.
It attend the world by the usage in gunpowder. • Highly important in19th century. • From the end of World War • Almost all potassium nitrate is used as a fine chemical • It is produced from basic potassium salts and nitric acid. Development
NH4NO3 (aq) + KOH (aq) → NH3 (g) + KNO3 (aq) + H2O (l) (Too dangerous) • NH4NO3 (aq) + KCl (aq) → NH4Cl (aq) + KNO3 (aq) (Too dangerous) • KOH (aq) + HNO3 → KNO3 (aq) + H2O (l) (Highly exothermic) Production
Molar mass 101.1032 g/mol(101) • Odor Odorless • Melting point 334 °C • Boiling point 400 °C (Decomposition) • Acidity(pH) 7(Nearly Neutral) Properties
Potassium nitrate has an orthorhombic crystal structure at room temperature. • It transforms to a trigonal system at 129 °C. • Above 560 °C, decomposition takes places by generating potassium nitrite and oxygen: • 2 KNO3 → 2 KNO2 + O2 Structure Changes According to States
Fertilizer • A source of nitrogen and potassium for plants. Oxidizer • One of the three components of black powder, with powdered charcoal (carbon) and sulfur. • In combination with other fuels, such as, withsugars in rocket candy. • Fireworks, Smoke bombs • Pre-rolled cigarettes for maintaining an even burn of the tobacco. Usage
Food Preservation • For preservation of salted meat since the Middle Ages • Due to inconsistent results compared to more modern nitrate and nitrite compounds it is less used.
Pharmacology • In toothpastes for sensitive teeth and increasing rate of use. • To relieve asthma symptoms again in toothpastes. • Treating of asthma and arthritis.
(Potassium Nitrate) • (Hydrogen Chloride) • Precipitation Reaction Experiment
+ + • Potassium Nitrate + Hydrochloric Acid Potassium Chlorine + Nitric Acid During the experiment
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