Question

What are amine salts $?$

Answer 1

We already know that salts are ionic compounds. Then we need to figure out what Amines are. Finally, provide an example and description of what amine salts are.

Complete answer:
Amines are compounds and functional groups that contain a basic nitrogen atom with a lone pair. Important amines include amino acids, biogenic amines, trimethylamine, and aniline.
Amine salts are similar to ammonium salts where the hydrogen atoms attached to the nitrogen are replaced by organic groups. Amines react with acids to form salts, which are named as substituted derivatives of ammonium compounds. For example, dimethylamine reacts with hydrogen chloride to form dimethyl ammonium chloride, which is an ionic compound. Amine salts formed from amines are crystalline materials that are readily soluble in water.
Amine salts are made by reacting amines with strong acids. Primary amine salts contain the $NH_3^ +$ group, secondary amine salts the $NH_2^ +$ group, and tertiary amine salts the $N{H^ + }$ group. Amine salts are important, because they are used to make drug substances water soluble, and hence more bioavailable. If all four hydrogen atoms of an ammonium salt are replaced by organic groups a quaternary ammonium compound is formed. Such compounds are made by reacting tertiary amines with halogen compounds; for example, trimethylamine with chloromethane gives tetramethylammonium chloride. Salts of this type do not liberate the free amine when alkali is added, and quaternary hydroxides can be isolated. Such compounds are strong alkalis, comparable to sodium hydroxide.

Note:
Note that amines and amides are two types of compounds found in the field of organic chemistry. The main difference between amine and amide is the presence of a carbonyl group in their structure. Amines have no carbonyl groups attached to the nitrogen atom whereas amides have a carbonyl group attached to a nitrogen atom.