potassium nitrate


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potassium nitrate,

chemical compound, KNO3, occurring as colorless, prismatic crystals or as a white powder; it is found pure in nature as the mineral saltpeter, or niter. (The name saltpeter is also applied to sodium nitratesodium nitrate,
chemical compound, NaNO3, a colorless, odorless crystalline compound that closely resembles potassium nitrate (saltpeter or niter) in appearance and chemical properties. It is soluble in water, alcohol, and liquid ammonia.
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, although less frequently.) It is slightly soluble in cold water and very soluble in hot water. Potassium nitrate is prepared commercially by the reaction of potassium chloride with sodium nitrate. When potassium nitrate decomposes (on heating) it releases oxygen; it has been used extensively as the oxygen-supplying component of gunpowder since about the 12th cent. It is also used in explosives, fireworks, model rocket propellants, matches, and fertilizers, as a preservative in foods (especially meats), and in the manufacture of nitric acid and of glass.

Potassium Nitrate

 

a salt; colorless crystals. Density, 2.11 g/cm3; melting point, 339°C. Readily soluble in water (31 g in 100 g H2O at 20°C; 246 g at 100°C).

Mixtures of potassium nitrate and organic substances are easily flammable and burn vigorously. Potassium nitrate is prepared by reacting HNO3 or nitrous gases with K2C03 or KC1. Potassium nitrate is used as a fertilizer, in glassmaking, and in the production of gunpowder.

In agriculture, potassium nitrate containing 44 percent K2O and 13 percent nitrogen is used as a base fertilizer (applied in the spring) and as a top-dressing for chlorine-sensitive crops (flax, potatoes, tobacco, grapes).

potassium nitrate

[pə′tas·ē·əm ′nī‚trāt]
(inorganic chemistry)
KNO3 Flammable, water-soluble, white crystals with saline taste; melts at 337°C; used in pyrotechnics, explosives, and matches, as a fertilizer, and as an analytical reagent. Also known as niter.

potassium nitrate

a colourless or white crystalline compound used in gunpowders, pyrotechnics, fertilizers, and as a preservative for foods, esp as a curing salt for ham, sausages, etc. (E252). Formula: KNO3
References in periodicals archive ?
Potassium nitrate as a mango flower inducer was easily accepted by farmers because it was affordable and not harmful to people.
The use of dentifrice containing 5% potassium nitrate for 14 days (before and during dental bleaching treatment) reduced tooth sensitivity during the first week.
Handosh M, A superior desensitizer- potassium nitrate, J Am Dent Assoc, 1974, 88:831-832.
These results are in line with Demir and Mavi (2004), who found increased germination and mean germination time of watermelon seeds treated with potassium nitrate.
On the other hand, potassium nitrate, or saltpeter, wasn't as easy to isolate.
The molten salt is a mixture of 60% sodium nitrate and 40% potassium nitrate, a nonflammable and non-toxic mixture commonly used in the chemical and metals industries as a heat-transport fluid.
5 tons of = a bomb-making agent, potassium nitrate, which was stored in sugar bags mark= ed as humanitarian aid from the European Union.
Kemapco is located in Aqaba, Jordan and produces potassium nitrate and dicalcium phosphate.
Gunmaker Davide Pedersoli provides instructions for doing this including a process for saturating paper with a solution of potassium nitrate.
Potassium nitrate fertilizer enjoys various niches that competing potassium chloride cannot, such as tobacco and premium fruit and flowers for export.
A spark could detonate this blend of charcoal, sulfur, and the compound potassium nitrate.
Early on, smoking sulfur was frequently employed, while in 18th-century Germany a mixture of sulfur, potassium nitrate (saltpeter), and wheaten bran (Raucher Pulver) was used (18).