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..
Digest Bone Ash with Sulphuric Acid; Acid Calcium Phosphate is formed. Ca3(Po4)2+2H2So4=CaH4(Po4)2+ 2CaSo4. Filter and add Sodium Carbonate to the solution. CaH4(Po4)2+Na2Co3=Na2Hpo4+-H2O+Co2+CaHpo4. The filtrate requires to be evaporated and the salt is obtained by crystallization.
Large, colorless, monoclinic prisms, odorless, and having a cooling saline taste. The crystals effloresce on exposure to the air, and gradually lose 5 molecules of their water of crystallization. Solubility. - In 5 parts of water.
Lime phosphate sulphates and carbonates.
Sodium Phosphate is used to prepare Ferri Phosphas Solubilis.
Dose, 5 gr. to 1 oz .; .30 to 30. gm.