Characters. - A white powder, blackened by sulphuretted hydrogen.

Solubility. - It is insoluble in water, but soluble with effervescence in nitric acid.

Reactions. - The solution gives the reactions of bismuth (pp. 713, 731).

Impurities. - Nitrate.

Test. - When added to sulphuric acid coloured with sulphate of indigo the colour of the latter is not discharged. Dose. - 5 to 20 grains. Bismuthi Citras, B. and U.S.P. Citrate of Bismuth. BiC6H5O7; 399.

Characters. - A white amorphous powder, permanent in the air, odourless and tasteless.

Solubility. - It is insoluble in water or alcohol, but soluble in water of ammonia.

Dose. - 2 to 5 grains.

Uses. - Used to prepare the solution of bismuth and ammonium.

Preparations.

B.P

Liquor Bismuthi et Ammonii Citratis.

U.S.P

Bismuthi et Ammonii Citras. Liquor „ Citratis.