The country of Iraq covers the region known since ancient times as Mesopotamia, a Greek word meaning land between the rivers.. The fertile valley between the Tigris and Euphrates rivers supported some of the worldâs earliest civilizations.
In Saskatchewan there are two grades of sodium sulphate: the first is a salt cake grade, which is primarily used for wood digestion in the pulp and paper industry; the second is a detergent grade product that is used in detergents, glass, dyes, textiles, tanning, and in the chemical industry.
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.