Synonyms for free base

The manner in which the free base was obtained was briefly as follows.

This in acid solution is blue, and the free base is a dark-blue, almost black.

Tetanine may be obtained as a free base by treating the hydrochloride with freshly precipitated moist silver oxide.

In many cases the hydrolysis of a salt is only partial, resulting in the formation of basic salts instead of the free base.