In chemistry|lang=en terms the difference between hydrochloride and trihydrochloride
is that hydrochloride is (chemistry) a compound of hydrochloric acid with an organic base such as an amine while trihydrochloride is (chemistry) any compound containing three hydrochloride groups.
As nouns the difference between hydrochloride and trihydrochloride
is that hydrochloride is (chemistry) a compound of hydrochloric acid with an organic base such as an amine while trihydrochloride is (chemistry) any compound containing three hydrochloride groups.