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..
A liquid obtained from sea water and saline springs.
A heavy, dark, brownish-red, mobile liquid, evolving, even at ordinary temperatures, a yellowish-red vapor, highly irritating to the eyes and lungs, and having a peculiar suffocating odor, resembling that of Chlorine. Sp. gr., 2.990. Solubility, - In 30 parts of water; readily in Alcohol and Ether.
Its action is like that of chlorine and iodine. It is rarely used in medicine.
Potassii Bromidum. Potassium Bromide. KBr=118.79. Source. - By adding Bromine to a solution of Potassa, a solution of the
Bromide and Bromate is made. 3Br2+6Koh=5KBr+KBrO3+3H2O. On evaporation to dryness, mixing the salts with Charcoal and heating to redness, the Bromate is reduced to a Bromide, while the Oxygen unites with the Carbon, forming Carbonic Oxide, which escapes. KBrO3+3C=KBr+3CO. Dissolving in water, the solution yields the Bromide in crystals.
Colorless or white cubical crystals, or granules, having a pungent saline taste. Solubility. - In about 1.6 parts water; in 200 parts of Alcohol.
Potassium bromide and free alkali.
Acids, acid and metallic salts.
Dose, 5 to 60 gr.; .30 to 4.00 gm.
Sodii Bromidum. Sodium Bromide. NaBr=102.76. Source. - Made from a solution of Soda, as Potassium Bromide is made from a solution of Potassa.
Colorless or white cubical crystals, or a white granular powder, having a saline, slightly bitter taste. Solubility. - In about 1.2 parts of water; in 13 parts of Alcohol.
Those of Potassium Bromide.
Dose, 15 to 60 gr.; 1. to 4. gm.
Ammonii Bromidum. Ammonium Bromide. Nh4br= 97.77.
Made by neutralizing Hydrobromic Acid with Ammonia or Ammonium Carbonate, evaporating and crystallizing. HBr+Nh4oh= Nh4br+H2O.
Colorless transparent, prismatic crystals, or a white crystalline product, having a pungent saline taste. Solubility. - In 1.5 parts of water; in 30 parts of Alcohol.
Acids, acid salts, and spirit of nitrous ether.
Iodides and free bromine.
Dose, 5 to 30 gr.; .30 to 2.00 gm.
Lithii Bromidum. Lithium Bromide. LiBr=86.77.
From a solution of Ferrous Bromide heated with Lithium Carbonate; when cool the solution is evaporated, and the salt obtained by crystal-lizadon. FeBr2+ Li2Co3=2LiBr+ FeCo3.
A white granular salt, odorless, having a sharp and slightly bitter taste, very deliquescent. Solubility. - In 0.6 part of water; very soluble in Alcohol.
Dose, 5 to 20 gr.; .30 to 1.20 gm.
Calcii Bromidum. Calcium Bromide. CaBr2=199.43. Source. - From pure Calcium Carbonate by solution in Hydrobromic
Acid and evaporation. CaCo3+2HBr=CaBr2+Co2=H2O.
A white granular salt, having a sharp, saline taste, very deliquescent. Solubility. - In 0.7 part of water, and in 1 part of Alcohol.
Dose, 15 to 30 gr.; 1. to 2. gm.
Zinci Bromidum. Zinc Bromide. ZnBr2=224.62. Source. - From granulated Zinc digested in Hydrobromic Acid; the solution is concentrated, acidulated with Hydrobromic Acid, and dried upon a water-bath. Zn+2HBr=ZnBr2+H2.
A white granular powder, having a sharp, saline and metallic taste, very deliquescent, and a neutral reaction. Solubility. - Readily in water and Alcohol.
Dose, 1 to 5 gr.; .06 to .30 gm.
Strontii Bromidum. Strontium Bromide. SrBr2+6H2O
By neutralizing diluted Hydrobromic Acid with Strontium Carbonate, filtration and evaporation. SrCo3+2HBr=SrBr2+Co2+H2O.
Colorless, transparent, hexagonal crystals, odorless, and having a bitter saline taste. Very deliquescent. Solubility. - In 1.05 parts of water. Readily soluble in Alcohol.
Barium and calcium salts.
Dose, 5 to 30 gr.; .30 to 2.00 gm.