Characters. - Colourless or white quadrangular plates, deliquescent in moist air, having the odour of valerianic acid, a sharp and sweetish taste, and a neutral reaction.

Solubility. - Very soluble in water and in alcohol. Reactions. - When heated the salt fuses, gives off vapour of ammonia, and of valerianic acid, and is finally dissipated without leaving a residue.

Dose. - 2 to 8 grs. (0.13 to 0.52 gm.).

Use. - It is chiefly used, like valerian, in cases of hysteria.