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Nicholas Leblanc (1742-1806) was a French chemist, known best for the development of the Leblanc process, which is the distillation and preparation of soda from common salt: When salt is treated with sulphuric acid to yield sodium sulphate, this is reduced by carbon to give sodium sulphide. Sodium carbonate (or soda) is formed as a reaction between this and limestone. However, the Leblanc process was later displaced by the Solvay process.
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