Characters. - White feathery silk crystals, permanent in air,. with no smell, but a bitter taste.

Solubility. - Soluble in 24 parts of water at 15° C.

Reactions. - In its reactions it corresponds to the hydrochlorate, but is known to be a sulphate by giving with chloride of barium a white precipitate insoluble in hydrochloric acid.

U.S.P. Preparations. None In B.P

Dose.

Pulvis Morphinae Compositus ........................................

10 gr. (0.65 gm.)

Trochisci Morphinae et Ipecacuanhae ..............................

1 or 2.