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The Health Benefits of Black Salt. Salt is one of those substances that humans depend upon, not only for its taste, but also for its health benefits and its ability to preserve food. The Indian black salt, also known as 'Kala Namak', is a popular variety of Indian volcanic stone salts. It is used extensively in India, Pakistan and internationally, by those who know its benefits. Its unusual color comes from the presence of tiny amounts of iron and other minerals.
Saltpeter is a common chemical, used for many products and science projects. Here's a look at what exactly saltpeter is. Answer: Saltpeter is the natural mineral source of the chemical potassium nitrate, KNO 3. Depending where you live, it may be spelled 'saltpetre' rather than 'saltpeter'.Before systematic naming of chemicals, saltpeter was called nitrate of potash. It has also been called 'Chinese salt' or 'Chinese snow'.Pure saltpeter or potassium nitrate is a white crystalline solid, usually encountered as a powder. Most potassium nitrate is produced using chemical reaction of nitric acid and potassium salts, but bat guano was an important historical natural source.nswer: Saltpeter is the natural mineral source of the chemical potassium nitrate, KNO 3. Depending where you live, it may be spelled 'saltpetre' rather than 'saltpeter'. Before systematic naming of chemicals, saltpeter was called nitrate of potash.