This section is from the book "A Text-Book Of Pharmacology, Therapeutics And Materia Medica", by T. Lauder Brunton. Also available from Amazon: A text-book of pharmacology, therapeutics and materia medica.
Preparation. - From the mother-liquors of the crystallisation of the sulphates of quinine, cinchonidine, and quinidine, by precipitating with caustic soda, washing with spirit until free from other alkaloids, dissolving in sulphuric acid, purifying with animal charcoal, and allowing to crystallise.
Characters. - Hard, colourless, short, prismatic crystals, with a vitreous lustre. The aqueous solution has a bitter taste; the acidified solution is not fluorescent (p. 941).