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Potassium Nitrate

gunpowder powder explosive mixed

Potassium nitrate, also known as saltpeter or niter, is a chemical compound consisting of potassium, nitrogen, and oxygen. While it has many applications, including use as a fertilizer, its most important usage historically has been as a component of gunpowder. Over time its use as an explosive has been made nearly obsolete by dynamite and TNT, but it is still used today in artilleryshell primers, hand-grenade fuses, and fireworks.

Potassium nitrate consists of three basic chemical elements: potassium a soft, light, silver white metal; nitrogen a colorless, odorless gas; and oxygen, another common gas. When these three elements are reacted in the proper proportions they form a whitish compound known as nitre, or saltpeter, which has the chemical formula KNO3. This naturally occurring compound, which forms thin whitish glassy crusts on rocks, can be found in sheltered areas such as caves and particularly on soils rich in organic matter. Until the first World War the United States imported most of its potassium nitrate from Europe where it was mined from ancient sea beds. When these sources became unavailable during the war, the brines lakes in California became the principal supplier of nitre.

Since it is rich in potassium, an element which is vital for plant growth, large quantities of potassium nitrate are used annually as fertilizer. It also has utility as a food preservative, and although never proven, it is claimed that when ingested saltpeter has an aphrodisiac, or sexual-desire-reducing effect. However, the most renowned use for this whitish powder was discovered over 2,200 years ago by the Chinese. When 75% potassium nitrate is mixed appropriately with 15% carbon (charcoal) and 10% sulfur, the resultant black powder has explosive properties. This mixture (which throughout history has enjoyed such colorful nicknames as "Chinese Snow" and "the Devil's Distillate") eventually became known as gunpowder. As early as A.D. 1000, it was used by its inventors in explosive grenades and bombs. By the thirteenth century, the use of gunpowder had spread throughout the western world: in 1242 the English philosopher Roger Bacon described his own preparation of this material. By the early fourteenth century, black powder and guns were being manufactured in Europe. Although the early firearms were awkward and inefficient, they were rapidly improved. Their use led to significant social changes, including the end of the European feudal system. In fact, it is arguable that exploitation of the properties of gunpowder has been responsible for many of the major social and cultural changes in history.

Originally, potassium nitrate and the other components of gunpowder were carefully hand mixed and broken into small particles using wooden stamps. Later, water power mechanized the stamping stage, and metal stamps replaced the wooden ones. In modern production, charcoal and sulfur are mixed by the tumbling action of steel balls in a rotating hollow cylinder. The potassium nitrate is pulverized separately, and the ingredients are then mixed and ground. After further crushing the gunpowder is pressed into cakes; these are then rebroken and separated into grains of specific size. Finally, the grains are tumbled in wooden cylinders to wear off rough edges. During this process graphite is introduced, a coating powder which provides a friction-reducing, moisture-resistant film.

By 1900 black powder had been virtually replaced as the standard firearms propellant. Although it had served for centuries, it had many drawbacks. It produced a large cloud of white smoke when ignited, built up a bore-obstructing residue after relatively few shots, and absorbed moisture easily. Its replacement, nitrocellulose based smokeless powders (known as guncotton), eliminated most of these disadvantages. Gunpowder had already been largely replaced as a primary blasting explosive by dynamite and TNT but it is still widely used today in artillery-shell primers, hand-grenade fuses, and fireworks.

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almost 9 years ago

i found this site really helpful with my coursework



thanks very much



my regards



Tiffany

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about 7 years ago

I looked up potassium nitrate because I saw it listed as an ingredient in an all natural toothpaste. I'm not sure if this is something I want to put in my mouth now.

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over 1 year ago

It is NOT used to "treat" high blood pressure!

Its used as a salt substitute.

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over 1 year ago

65 grams finely ground Potassium Nitrade and 35 grams of powdered sugar makes the perfect rocket fuel... I saw a YouTube video, sending a rocket 2,300 feet up, and much cheaper than buying a $17 rocket motor at the hobby store. I do have concerns however regarding the safety of mixing the compound at home, seems to be very flamable and dangerous.

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about 3 years ago

Why the hell is it in my toothpaste exactly?

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about 7 years ago

ok good site but for my science fair i need to know how to turn pottasium nitrate into pottasium chlorate. any idea?

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over 5 years ago

ALL I WANTED TO KNOW WAS IF POTASSIUM IS IN GRANADES!!!!

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about 7 years ago

It is NOT an aphrodisiac! It is an ANaphrodisiac. Please make this correction.

And for anyone worried about consumption, it is widely used to treat hypertension (high blood pressure) so it is completely safe.

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over 1 year ago

Same chemicals we used to make smoke bombs as kinds, but we had the mixture wrong, they never exploded.

Do this now, make explosives, even for fun, they will arrest you.

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over 1 year ago

i wanted to know how process whereby portassium nitrate is used in pyrotechnices and fireworks

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almost 6 years ago

One of the more common methods of making black powder in the pyrotechnic trade is to ball mill the Potassium Nitrate and Charcoal for four hours. Add the Sulfur and ball mill for another 1/2 hour. This limits the dangerous milling to a 1/2 hr.

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almost 8 years ago

this helped me out and im only 12 years old not doing coursework obviously but instead doing a large project on Potassium Nitrate. Thanks a lot, this was amazing help and got me 98% on it and a teachers merit prize.

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over 8 years ago

heehee now i just need some charcoal and a little bit of sulfur. cheers

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over 8 years ago

This site helped me with my applied science coursework - thanks a lot!

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over 8 years ago

Thankyou this helped me with my applied science coursework too. Everything here is just what i needed.

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over 1 year ago

im big and like attention, come here kiddos my fax email is raul420Blaze@swagDaddy.orgy.uk

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over 8 years ago

Holy cow!! This really helped out on my gunpowder project. It gave me almost all my info. Yay...

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