II. Hydrargyrum. Part 3
Description
This section is from the book "Materia Medica Pharmacy, Pharmacology And Therapeutics", by W. Hale White. Also available from Amazon: Materia Medica Pharmacy, Pharmacology And Therapeutics..
II. Hydrargyrum. Part 3
8. Liquor Hydrargyri Nitratis. Solution Of Mercuric Nitrate
Liquor Hydrargyri Nitratis. Solution Of Mercuric Nitrate. A liquid containing about 60 per cent. of Mercuric Nitrate. Hg(No3)2=323.58, together with about 11 per cent. of free Nitric Acid.
Source
Dissolve Red Mercuric Oxide, 40; in Nitric Acid, 45; with distilled water, 15, and heat.
Characters
A clear, nearly heavy, colorless liquid, having a faint odor of Nitric Acid. Sp. gr. about 2.100.
Impurity
Mercurous Nitrate.
9. Unguentum Hydrargyri Nitratis. Ointment Of Mercuric Nitrate
Unguentum Hydrargyri Nitratis. Ointment Of Mercuric Nitrate. Synonym. - Citrine Ointment.
Source
Mix a hot solution of Mercury, 70; in Nitric Acid, 175; with Lard Oil, 760.
Characters
A lemon-yellow ointment.
10. Hydrargyrum Ammoniatum. Ammoniated Mercury
Hydrargyrum Ammoniatum. Ammoniated Mercury. Nh2hgCl=251.18. Synonyms. - White Precipitate. Mercuric Ammonio-Chloride.
Source
Mix solutions of Ammonia, 100; and Corrosive Mercuric Chloride, 100. HgCl2+2Nh4oh=Nh2hgCl+Nh4cl+2H2O. Filter and wash the precipitated Ammoniated Mercury.
Characters
White, pulverulent pieces, or a white, amorphous powder, having an earthy, afterwards styptic and metallic taste. Solubility. - Almost insoluble in water or Alcohol.
Impurities
The same as of the Corrosive Chloride.
Preparation
Unguentum Hydrargyri Ammoniati
Ointment of Ammoniated Mercury. Synonym. - White Precipitate Ointment. Ammoniated Mercury, 10; Benzoinated Lard, 90.
11. Hydrargyri Cyanidum. Mercuric Cyanide
Hydrargyri Cyanidum. Mercuric Cyanide. Hg(CN)2 =251.76.
Source
By boiling pure Potassium Ferrocyanide with Mercuric Sulphate in water, and recrystallization from diluted Alcohol. 7HgSo4+2K4Fe (CN)6=Hg+6Hg(CN)2+4K2So4+Fe2(So4)3.
Characters
Colorless or white prismatic crystals, odorless, having a bitter, metallic taste. Solubility. - In 12.8 parts of water and 15 parts of Alcohol. Dose, 1/60 to 1/10 gr.; .001 to .006 gm.
12. Hydrargyri Subsulphas Flavus. Yellow Mercuric Subsulphate
Hydrargyri Subsulphas Flavus. Yellow Mercuric Subsulphate. Hg(HgO)2So4=727.4. Synonyms. - Turpeth Mineral. Basic Mercuric Sulphate.
Source
By solution of Mercury, 100; Sulphuric Acid, 30; Nitric Acid, 25; water, a sufficient quantity; decantation, drying of the residue.
Characters
A heavy, lemon-yellow powder, odorless and almost tasteless. Solubility. - In about 2000 parts of water; insoluble in Alcohol.
Dose, 2 to 4 gr.; .12 to .24 gm. as an emetic
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