May be infection: The feeling of swelling in the throat could represent swollen lymph nodes, which may be a sign of infection and could also cause slight neck pain. See a physician if your symptoms are persistent or if you develop additional symptoms such as fever. ...
Image Credit: Main Image: Saltpetre or Saltpeter is chemically known as Potassium nitrate. It is a white crystalline powder that is soluble in water and is not combustible but aids in combustion of materials which can lead to explosions under prolonged heat conditions leading to toxic fumes.otassium Nitrate has numerous uses, 1  Fertilizer: Commonly used as a fertilizer as it provides the plants with both vital nutrients, potassium and nitrogen. 2  Oxidizer: As it is a good oxidizing agent it is use din gunpowder and fireworks.
The largest occurrence of natural saltpeter as sodium nitrate and associated compounds is in Chile's Atacama Desert. Called Chile saltpeter, it derives from deposits of bird guano. Chemical processing of these deposits isolates the potassium nitrate.rdinary saltpeter in the form of potassium nitrate occurs in the sap of plants such as sunflower, common borage, celandine and tobacco. Vegetables such as spinach, celery and cabbage contain significant amounts of potassium nitrate.