Potassium nitrate is a chemical compound that is commonly referred to as "saltpeter" in the United States. This compound is one of the few available solid sources of nitrogen. In the 1800s, potassium nitrate was made by combining wood ash with manure, but most potassium nitrate today is manufactured by oxidizing ammonia. This compound has several industrial, culinary and other uses.
Tobacco Additive
Major cigarette manufacturers add potassium nitrate to pre-rolled cigarettes, according to TobaccoDocuments.org. The purpose of adding potassium nitrate is to give cigarettes a slow, even burn.
Agricultural Fertilizer
According to Michigan State University, potassium nitrate is commonly used as an agricultural fertilizer. It is appropriate for fertilizing celery, tomatoes, leafy green vegetables, potatoes and some fruits. High nitrate content and a low salt index make this fertilizer desirable for high-value and specialty crops.
Toothpaste
Some toothpastes designed for people with sensitive teeth contain potassium nitrate. According to a report published by The Cochrane Collaboration, studies evaluating the effectiveness of potassium nitrate for reducing dentine hypersensitivity have proven inconclusive. Still, the popularity of toothpastes containing potassium nitrate continues to increase.
Corned Beef
Potassium nitrate has been used in the meat curing process since the Middle Ages. Today, sodium nitrate has replaced potassium nitrate for most meat-curing applications. However, according to the Food Network, potassium nitrate is still used to produce corned beef. The salt compound gives this type of meat its characteristic pink color.
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