THE CODEX AND THE BRITISH PHARMACOPOEIA. 
15 
I may pass them by simply enumerating them ; they consist of—sulphide of 
antimony, hydrated oxysulphide of antimony or kermes mineral, golden sul¬ 
phide of antimony, black sulphide of mercury or iEthiops mineral, persulphide 
of tin, sulphide of iron, impure sulphide of calcium, sulphide of sodium, solution 
of the quintasulphide of sodium, sulphide of potassium, solution of ditto, and so¬ 
lution of impure quintasulphide of potassium. 
CHAPTER V. 
CHLORIDES. 
The following chlorides are contained in this chapter:—Protochloride of an¬ 
timony, solution of protochloride of antimony, chloride of gold, chloride of gold 
and sodium, protochloride of mercury crystalline, ditto in powder, ditto by pre¬ 
cipitation, sublimed deutochloride or bichloride of mercury, ditto in solution, per- 
chloride of irou, chloride of zinc, chloride of magnesium, chloride of calcium, 
chloride of barium, chloride of sodium, and chloride of potassium. Of these, 
the chlorides of mercury are perhaps the most interesting to pharmaceutists. 
Peotochlorure de Mergure. Hg., Cl = 235 5. 
65. Peotochlorure de Mercure par Sublimation*. 
Mercure Doux. Calomel. Calomelas. Chloruretum Hydrargyrosum. 
Mild Mercury. Calomel. Hydrargyrous or Mercurous Chloride , 
is prepared by subliming a mixture of mercury and bichloride of mercury, 
and is obtained in a crystalline mass ; the protochloride of mercury, in powder, 
is to be prepared by a second sublimation or volatilization of the crystalline pro¬ 
tochloride. In the new P. B. this is subchloride. 
The protochloride of mercury, by precipitation, is prepared from a solution of 
the nitrate of the protoxide of mercury, by adding thereto a slight excess of 
hydrochloric acid, which will throw down all the mercury in the state of proto¬ 
chloride ; this is to be well washed, by frequent decantations, and the last wash¬ 
ings by means of boiling distilled water, when well-drained, it is to be dried in 
a stove; this preparation is also called preeipite hlanc , but it is not the same 
as the hydrargyrum ammoniatum of the P. B., and commonly known as white 
precipitate. 
Deutochlorure de Mercure. HgCl=135’5. 
68. Deutochlorure de Mercure Sublime*. 
SublimS Corrosif. Bichlorure de Mercure. 
Chloruretum Hydrargyricum. 
Bichloride of Mercury. Hydrargyric or Mercuric Chloride. 
This is prepared by subliming a mixture of sulphate of mercury, dried chlo¬ 
ride of sodium, and binoxide of manganese ; the quantity of chloride of sodium 
ordered is larger, proportionately, than in the P. B. form ; in the Codex equal 
parts by weight of the sulphate of mercury and chloride of sodium are used ; in 
theP. B., only half the weight of chloride of sodium is employed to the quantity 
of sulphate of mercury. The larger quantity of the chloride of sodium is said 
practically to be necessary, or at least desirable. 
69. Deutochlorure de Mercure en Solution. 
Liqueur de Van Sivieten. 
Chloruretum Hydrargyricum Aqua Solutum. 
Solution of bichloride of mercury in water and spirit, containing one part of 
bichloride in one thousand, being a little stronger than the solution of Pharm. 
Lond., which contained half a grain in an ounce of the liquor ; this is a useful 
solution for the practitioner, and the omission of it in the P.B. 1864, was much 
regretted.f In the P. B. the bichloride is now perchloride of mercury. 
f It is now restored. 
