.. Sulphate of Aniline. (C6H5,H1N)2H1So4.

Synonyms. - Kyanol Sulphate, Phenylamine Sulphate, Phe-nylia Sulphate.

Prepared from an artificial alkaloid, obtainable from Coal Tar, from Indigo, from Oleum Animale, and from Benzol. Commercially it is always made from the latter.

It may be obtained from the operative chemists.

Characters and Tests. - Colourless crystalline masses. Sparingly soluble in alcohol, entirely and readily soluble in water. The aqueous solution gives a white precipitate with Chloride of Barium, and when added to solution of Chlorinated Lime, produces instantly a mauve colour.

In vol. xx. of the British Journal of Hom. it is referred to as very useful in choraea, and since, when given to animals in poisonous doses, it always produces violent clonic and tonic spasms, it may be fairly considered homoeopathic to the cases in point.

Preparation. - Solution in distilled water, which should be preserved in yellow actinic bottles.