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salt
salt Salt crystal magnified.

salt

acid-base reactions
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News •

Business tax incentives will grow, SALT will be cut , Crapo tells senators • June 11, 2025, 11:50 PM ET (Politico)
Senate says SALT isn’t settled • June 5, 2025, 11:17 PM ET (Politico)
House Republican tax bill passes 'SALT' deduction cap of $40,000. Here's who would benefit. • May 23, 2025, 12:03 AM ET (NBC)
Live updates: Donald Trump tries to break GOP impasse on Medicaid, SALT in 'big, beautiful bill' • May 20, 2025, 4:17 PM ET (The Hill)

salt, in chemistry, substance produced by the reaction of an acid with a base. A salt consists of the positive ion (cation) of a base and the negative ion (anion) of an acid. The reaction between an acid and a base is called a neutralization reaction. The term salt is also used to refer specifically to common table salt, or sodium chloride. When in solution or the molten state, most salts are completely dissociated into negatively and positively charged ions and are good electrolytes (conductors of electricity).

The Editors of Encyclopaedia BritannicaThis article was most recently revised and updated by Erik Gregersen.