Dose, 1/60 - 1/15 gr.; 1 - 4 mgms. Colourless, inodorous crystals. Soluble 1 in 7,000 of cold, 1 in 2,500 of hot water, 1 in 170 of alcohol, 1 in 6 of chloroform. Incompatibles as for alkaloids.

1Syrupus Ferri Phosphatis cum Quinina et Strychnina. (see p. 60.)