Contractions. - Natr-m. Na-m.

Present name. - Sodic Chloride. NaCl.

Common Salt (German, Kochsalz), purified by solution in distilled water and re-crystallization.

Characters and Tests. - In small white crystalline grains, or transparent cubic crystals, free from moisture, has a purely saline taste, imparts a yellow colour to flame, is soluble in water. The solution is not precipitated by Perchloride of Platinum, but gives with Nitrate of Silver a white precipitate soluble in Ammonia, but insoluble in Nitric Acid.

Preparations. - Trituration. Solution in distilled water for lx, 20 O.P. spirit for 1, and rectified spirit for all above.

Reference to Horn. Proving. - Chr. Kr., iv. (Est. Zeitsch. f. Horn., iv.

Proper forms for dispensing. - lx to 3, Trituration. lx, Solution. 1 and upwards, Tincture, Pilules, or Globules.