Contractions. - Merc-iod. Mr-i.

Synonyms. - Mercurius Iodatus, M. Protoiodatus, Hy-drargyri Iodidum Viride (P.B.).

Present name. - Mercurous Iodide. Hgl.

Green Iodide of Mercury.

This may be prepared in the following way: -

Take of

Rub the Iodine and Mercury in a porcelain mortar, occasionally moistening the mixture with a few drops of the spirit, and continue the trituration until metallic globules are no longer visible, and the whole assumes a green colour. The product thus obtained should be dried in a dark room, on filtering-paper, by simple exposure to the air, and preserved in an opaque bottle.

Characters and Tests. - A dull-green powder, insoluble in water, which darkens in colour upon exposure to light. When it is shaken in a tube with ether nothing is dissolved. Gradually heated in a test-tube, it yields a yellow sublimate, which, upon friction, or after cooling, becomes red, while globules of metallic Mercury are left in the bottom of the tube.

Preparation. - Trituration.

Reference to Horn. Proving. - A full proving of this by Dr. Blakeley was published in Philadelphia, in 1866.

Proper forms for dispensing. - lx to 3, Trituration only. 4, dilute Tincture only. 5 and upwards, Tincture, Pilules, or Globules.