The chemical name of caustic soda is [[1]].

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Detailed Solution

concept - Caustic soda's chemical name is sodium hydroxide (NaOH). This is produced commercially using graphite as the anode and mercury as the cathode in an aqueous sodium chloride solution. In a specifically made container known as a Costner and Kellnerts cell or mercury cathode cell, electrolysis is conducted.
Caustic soda characteristics: Sodium hydroxide is a 591 K white crystalline solid. It is very soluble in water and forms a potent alkaline solution that is corrosive, soapy to the touch, and has a bitter taste. NaOH crystals are liquids. Crystals of sodium carbonate are created when the sodium hydroxide solution created at the surface reacts with ambient carbon dioxide.
Hence, the answer is sodium hydroxide.

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