Contractions. - Merc-corr. Mr-c.

Synonyms. - Hydrargyri Perchloridum (P.B.), Mer-curius Corrosivus Sublimatus.

Present name. - Mercuric Chloride. HgCl2.

Corrosive Sublimate. Perchloride of Mercury.

This may be obtained from the manufacturing chemists.

Characters and Tests. - In heavy colourless masses of prismatic crystals, possessing a highly acrid, metallic taste; more soluble in alcohol, and still more so in ether than in water. Its aqueous solution gives a yellow precipitate with Caustic Potash, a white precipitate with Ammonia, and a curdy white precipitate with Nitrate of Silver. When heated it sublimes without decomposing, or leaving any residue.

Preparations. - Trituration. Solution in rectified spirit.

Reference to Horn. Proving. - R. A. M. L., i. Roth,

Mat. Med., ii.

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