sodium chloride (NaCl) - David Darling
Sodium chloride (NaCl) is a colorless crystalline compound, also known as common salt, table salt, or simply, salt (although, in chemical usage, the term salt has a much broader meaning). Sodium chloride occurs in seawater and natural brines (along with other salts of sodium, calcium, magnesium, and other light metals) and as the mineral halite (rock salt).