Sodium chloride, also known as common salt or table salt, is a chemical compound with the formula NaCl. Its mineral form is called halite. It is highly soluble in water and is the saltmost responsible for the salinity of the ocean and of the extracellular fluid of many multicellular organisms.As the main ingredient in edible salt, it has long been used as a food seasoning and preservative. In its latter capacity, it reduced human dependence on the seasonal availability of food and allowed travel over long distances. In this manner, it served as a foundation for the spread of civilization.In soap making, salt adds hardness to the bars consistency, which makes it last longer.
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