Cinchonidinae Sulphas - Cinchonidinae Sulphatis - Cinchonidine Sulphate. - Description and Properties. - White, silky, acicular crystals, without odor, and having a very bitter taste; slightly efflorescent on exposure to air. Soluble in 63 parts of water and in 72 parts of alcohol at 250 C.

Dose, 10-30 grains (0.6-2.0 Gm.) [4 grains (0.25 Gm.), U. S. P.].

Cinchonlnae Sulphas - Cinchoninae Sulphatis - Cinchonine Sulphate. Description and Properties. - Hard, white, lustrous, prismatic crystals, without odor and of a very bitter taste; permanent in the air; soluble in 58 parts of water and in 10 parts of alcohol at 250 C.

Dose, 5-30 grains (0.3-2.0 Gm.) [4 grains (25 Gm.), U. S. P.].

Quinina - Quininae - Quinine. - Description and Properties. - A white, flaky, amorphous or crystalline powder, odorless, and having a very bitter taste; permanent in the air; soluble in 1750 parts of water and in 0.6 part of alcohol at 250 C. Quinine should be kept in well-stoppered bottles, in a dark place.

Dose, 1-60 grains (0.06-4.0 Gm.) [4 grains (0.25 Gm.), U. S. P.].

Quininae Bisulphas - Quininae Bisulphatis - Quinine Bisulphate. - Description and Properties. - Colorless, transparent, or whitish orthorhombic crystals or small needles; odorless and having a very bitter taste; efflorescent on exposure to the air. Soluble in 8.5 parts of water and in 18 parts of alcohol at 250 C. It should be kept in well-stoppered bottles, in a dark place.

Dose, 1-15 grains (0.06-1.0 Gm.) [4 grains (0.25 Gm.), U. S. P.].

Quininae Hydrobromidum - Quininae Hydrobromidi - Quinine Hydrobro-mide. - Description and Properties. - White, light, silky needles; odorless and of a very bitter taste. The salt is liable to lose water on exposure to warm or dry air. Soluble in 40 parts of water and in 0.67 part of alcohol at 250 C. It should be kept in well-stoppered bottles, in a dark place.

Dose.- 1-20 grains (0.06-1.3 Gm.) [4 grains (0.25 Gm.), U. S. P.].

Quininae Hydrochloridum - Quininae Hydrochloridi - Quinine Hydrochloride.Description and Properties. - White, silky, light and fine needle-shaped crystals, odorless, and having a very bitter taste. The salt is liable to lose water on exposure to warm air. Soluble in 18 parts of water and in 0.6 part of alcohol at 250 C. Quinine hydrochlorate should be kept in well-stoppered bottles, in a dark place.

Dose. - 1 - 15 grains (0.06-1.0 Gm.) [4 grains (0.25 Gm.), U. S. P.].

Quininae Sulphas - Quininae Sulphatis - Quinine Sulphate. - Description and Properties. - White, silky, light, and fine needle-shaped crystals, fragile and somewhat flexible, making a very light and easily compressible mass, lustrous from superficial efflorescence after being for some time exposed to the air; odorless and having a persistent, very bitter taste. The salt is liable to lose water on exposure to warm air, to absorb moisture in damp air, and to become colored by exposure to light. Soluble in 720 parts of water and in 86 parts of alcohol, also in 36 parts of glycerin and in about 400 parts of chloroform, and freely soluble in dilute acids at 250 C. It should be kept in well-stoppered bottles, in a dark place.

Dose. - 1-60 grains (0.06-4.0 Gm.) [4 grains (0.25 Gm.), U. S. P.].