Dissolve the ammoniac in the vinegar and strain then evaporate the solution by means of a water bath, stirring constantly until it acquires a proper consistence.-Ph. U. S. It is used as a discutient plaster.
Ammoniac plaster, made by emulsionizing gum ammoniac with dilute acetic acid, straining, and evaporating on a water-bath to a suitable consistence [U. S. Ph., 1890; Br. Ph.].
