Bi=208.9.

1. Bismuthi Subcarbonas. Bismuth Subcarbonate

Bismuthi Subcarbonas. Bismuth Subcarbonate. (BiO)2 Co3+H2O?=527.53?.

Source

Dissolve Purified Bismuth in Nitric Acid and water, decant and filter, mix with Ammonia Water; the precipitate is washed and dissolved in Nitric Acid, and poured into a solution of Sodium Carbonate, the resulting precipitate is collected and washed. The final reaction is 2Bi (No3)3+3Na2Co3 + H2O=(BiO)2,Co3+H2O+6NaNo3+2Co2. The precipitated Carbonate is separated by filtration.

Characters

A white or pale yellowish-white powder, of somewhat varying chemical composition, odorless and tasteless. Solubility. - Insoluble in water and Alcohol.

Impurities

Lead, arsenic, chlorides and nitrates, tellurium, the last giving an alliaceous odor to the breath.

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

2. Bismuthi Subnitras. Bismuth Subnitrate

Bismuthi Subnitras. Bismuth Subnitrate. BiOno3+

H2O?=304.71?.

Source

Dissolve Purified Bismuth in Nitric Acid and water, concentrate by evaporation, pour in more water, and stir thoroughly, wash and dry the precipitated Subnitrate. Bi2+6Hno3=2Bi(No3)3+3H2 and Bi(No3)3 +H2O=BiOno3+2Hno3.

Characters

A heavy, white powder, of somewhat varying chemical composition, odorless and almost tasteless. Solubility. - Almost insoluble in water; soluble in Alcohol.

Impurities

As of the subcarbonate.

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

Bismuth subnitrate is used to prepare Neylander's test for glucose in urine.

3. Bismuthi Citras. Bismuth Citrate

Bismuthi Citras. Bismuth Citrate. BiC6H5O7=397.44. Source. - Boil Bismuth Subnitrate, 100; in Citric Acid, 70; dissolved in sufficient water. Wash the Precipitate and dry. BiOno3+H3C6H5O7+ H2O=BiC6H5O7+No4+H2O.

Characters

A white, amorphous micro-crystalline powder. Solubility. - Insoluble in water; soluble in Ammonia.

Impurities

As of the subcarbonate.

Dose, 1 to 3 gr.; .06 to .20 gm.

Preparation

Bismuthi Et Ammonii Citras

Bismuth and Ammonium Citrate.

Source

Mix Bismuth Citrate, 100; with distilled water to make a paste, heat, add Ammonia Water to make a solution, filter, evaporate, and dry on plates of glass.

Characters

Small, shining, pearly or translucent scales, of a slightly acidulous and metallic taste. Solubility. - Very soluble in water; sparingly soluble in Alcohol.

Dose, 2 to 5 gr.; .12 to .30 gm.

4. Bismuthi Salicylas. Bismuth Salicylate

Bismuthi Salicylas. Bismuth Salicylate (Not Official). - Bi(C7H5O3)3Bi2O3=1084.59.

Source

It is prepared by diluting a Glycerin solution of crystallized Bismuthous Nitrate with water, and decomposing this with a concentrated aqueous solution of Sodium Salicylate; the precipitate is well washed with hot water and carefully dried. It contains about 76 per cent. of Bismuth Oxide and 24 per cent. of Salicylic Acid.

Characters

It is a soft white powder. Solubility. - Insoluble in water, Glycerin and Ether, but soluble in acids.

Dose, 5 to 20 gr.; .30 to 1.20 gm.