Illustrated Glossary of Organic Chemistry

Hydrochloride (hydrochloride salt): A salt consisting of a chloride anion with the conjugate acid cation of a base, usually an amine. The generic structure is B-H+ Cl-.



Hydrogen chloride

Pyridinium hydrochloride
Pyridinium hydrochloride, a hydrochloride salt containing a pyridinium cation, can be formed by the reaction of pyridine with hydrogen chloride gas.

Molecular structure of pseudoephedrine hydrochloride, a commonly-used nasal and sinus decongestant.