Bromum

Bromine. Br.79.76.

Source

A liquid obtained from sea water and saline springs.

Characters

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.

Impurity

Iodine.

Action of Bromine

Its action is like that of chlorine and iodine. It is rarely used in medicine.

1. Potassii Bromidum. Potassium Bromide

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.

Characters

Colorless or white cubical crystals, or granules, having a pungent saline taste. Solubility. - In about 1.6 parts water; in 200 parts of Alcohol.

Impurities

Potassium bromide and free alkali.

Incompatibles

Acids, acid and metallic salts.

Dose, 5 to 60 gr.; .30 to 4.00 gm.

2. Sodii Bromidum. Sodium Bromide

Sodii Bromidum. Sodium Bromide. NaBr=102.76. Source. - Made from a solution of Soda, as Potassium Bromide is made from a solution of Potassa.

Characters

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.

Impurities And Incompatibles

Those of Potassium Bromide.

Dose, 15 to 60 gr.; 1. to 4. gm.

3. Ammonii Bromidum. Ammonium Bromide

Ammonii Bromidum. Ammonium Bromide. Nh4br= 97.77.

Source

Made by neutralizing Hydrobromic Acid with Ammonia or Ammonium Carbonate, evaporating and crystallizing. HBr+Nh4oh= Nh4br+H2O.

Characters

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.

Incompatibles

Acids, acid salts, and spirit of nitrous ether.

Impurities

Iodides and free bromine.

Dose, 5 to 30 gr.; .30 to 2.00 gm.

4. Lithii Bromidum. Lithium Bromide

Lithii Bromidum. Lithium Bromide. LiBr=86.77.

Source

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.

Characters

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.

5. Calcii Bromidum. Calcium Bromide

Calcii Bromidum. Calcium Bromide. CaBr2=199.43. Source. - From pure Calcium Carbonate by solution in Hydrobromic

Acid and evaporation. CaCo3+2HBr=CaBr2+Co2=H2O.

Characters

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.

6. Zinci Bromidum. Zinc Bromide

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.

Characters

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.

7. Strontii Bromidum. Strontium Bromide

Strontii Bromidum. Strontium Bromide. SrBr2+6H2O

=354.58.

Source

By neutralizing diluted Hydrobromic Acid with Strontium Carbonate, filtration and evaporation. SrCo3+2HBr=SrBr2+Co2+H2O.

Characters

Colorless, transparent, hexagonal crystals, odorless, and having a bitter saline taste. Very deliquescent. Solubility. - In 1.05 parts of water. Readily soluble in Alcohol.

Impurities

Barium and calcium salts.

Dose, 5 to 30 gr.; .30 to 2.00 gm.