This section is from the book "Materia Medica Pharmacy, Pharmacology And Therapeutics", by W. Hale White. Also available from Amazon: Materia Medica Pharmacy, Pharmacology And Therapeutics..
Cerium Oxalate. Ce2(C2O4)3+9H2O=704.78. Synonym. - Cerous Oxalate.
The powdered mineral is heated with concentrated Sulphuric Acid, ignited, then dissolved in dilute Nitric Acid and treated with Hydrogen Sulphide to remove copper; the calcium salt is held in solution by a little Hydrochloric Acid, and the cerite metals are precipitated as oxalates by Oxalic Acid. It is purified by calcination and solution, reduced to a cerous salt and precipitated by Oxalic Acid.
Aluminum and lanthanum and didymium oxalates.
Dose, 1 to 8 gr.; .06 to .50 gm.
It is given empirically for vomiting, especially for that of pregnancy, and occasionally with benefit. No physiological action is known. The dose above given is often exceeded; 30 gr. (2. gm.); have been frequently given with good results.