Characters. - Small, colourless, or white monoclinic crystals, or a crystalline powder permanent in dry air, odourless, having a saline, slightly bitter taste, and a neutral or faintly alkaline reaction.

Preparation. - Vide p. 618.

Solubility. - Soluble in 1.2 parts of water and in 13 parts of alcohol at 15° C. (59° F.)

Reactions. - It gives the reactions of sodium (p. 617), and if disulphide of carbon be poured into a solution of the salt, then chlorine water added drop by drop, and the whole agitated, the disulphide will acquire a yellow or yellowish-brown colour (bromide) without a violet tint (absence of iodide).

Dose. - 10 to 60 grains.

Action. - Its actions are the same as those of bromide of potassium, but it is said to be less irritating to the stomach, and less apt to cause depression when used for a length of time.