Contractions. - Brom. Bro.
Present name. - Bromine. Br.
This will seldom be prepared on the small scale; it can be so readily purchased from the operative chemists.
Characters and Tests. - A dark brownish-red, very volatile liquid, with a strong and disagreeable odour. Its specific gravity is 2.966. At the common temperature of the air it gives off red vapours, and at a temperature of 117° it boils. Agitated with solution of Soda in such proportion that the fluid remains very slightly alkaline, it forms a colourless liquid, which, if coloured by the farther addition of a small quantity of the Bromine, does not become blue on the subsequent addition of a cold solution of Starch.
Preparation. - Pure Bromine should be kept under water in well-stoppered bottles, and the low attenuations should always be made fresh as required. The 1 solution is made by dissolving 1 minim of Bromine (equal to 3 grains by weight) in 299 minims of distilled water, 3x with dilute alcohol, and all above with rectified spirit.
Reference to Horn. Proving. - N. Arch., ii.
Proper forms for dispensing. - 1 and 3x, Solution only. 2 and upwards, Tincture, Pilules, or Globules.