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and 24 per cent, of Salicylic Acid.

CHARACTERS. It is a soft white powder. Solubility. Insoluble in
water, Glycerin and Ether, but soluble in acids.

Dose, 5 to 20 gr. ; [.30 to 1.20 gm.]

ACTION OF BISMUTH SALTS.

External. Bismuth salts have no action on the unbroken
skin. Dusted on a raw surface they form a protecting coat, are
germicidal, and are very mildly astringent. [For this pur-
pose the tribromophenolate and subgallate, the latter also known
as dermatol (both unofficial), are preferable.]

Internal. If large doses of bismuth salts are injected under
the skin of animals, or if large doses of soluble salts are given to
them by the mouth, they produce effects as severe as those due
to antimony. The chief are gastro-intestinal irritation and fatty
degeneration, and it is stated that some very susceptible persons
may be poisoned by large doses by the mouth of insoluble salts ;
but, as a rule, any symptoms of gastro-intestinal irritation caused
by the insoluble bismuth salts are due to the arsenic with which
they may be contaminated. When pure, it is probable that
these salts, like any bland heavy powder, act chiefly as protec-
tives to the gastro-intestinal mucous membrane ; [for gastric
ulcer the subnitrate is to be chosen] . They have an astringent
action, diminishing secretion, and are [especially the naphtolate
(not official)] gastro-intestinal antiseptics. Bismuth is slowly
absorbed and excreted in the urine [Bergeret and Mayencon],
and it may be found in the liver, spleen, kidneys, and nervous
system. Nothing is known of any remote effects. Bismuth
leaves the rectum as the sulphide, and colors the faeces black. It
may cause a purplish line on the gums.

THERAPEUTICS OF BISMUTH SALTS.

External. Bismuth salts may be dusted on sores as protec-
tives and mild astringents. The following is a good bismuth



1 84 INORGANIC MATERIA MEDICA.

ointment: Bismuth oxide [official in B. P.] i part, and oleic
acid 8 parts, stirred in with 3 parts of white wax liquefied by
heat, and with 9 parts of soft paraffin. The subnitrate is some-
times snuffed up the nose during a cold, and suspended in muci-
lage it may be used as an injection for gonorrhoea or leucorrhoea.
Internal. The subnitrate and the subcarbonate are chiefly
employed, and they seem to be more efficient than the soluble
preparations. [Soluble bismuth salts when absorbed are likely
to act as active irritant poisons, and for this reason should not
be used.] The insoluble preparations must be suspended in
mucilage [of tragacanth, for with acacia a compact mass is
formed at the bottom of the bottle] ; given thus they are more
efficacious than as a lozenge. It is not known how the effect is
produced, but either of these salts is remarkably efficient in re-
moving gastric pain, whether due to ulcer or to gastritis, or
even when no cause can be detected. Both of these drugs will
often stop the vomiting due to gastritis, gastric ulcer, chloro-
form, pregnancy, or indeed any other cause. For their astrin-
gent action they are given in diarrhoea, doses of 60 gr. [4. gm.]
being administered without any ill effect, and some believe that
part of the benefit is due to the antiseptic action of bismuth
salts. They appear sometimes to check the severe diarrhoea of
tuberculous ulceration of the bowel. [For internal use the phe-
nolate and naphtolate (neither are official) are preferable to the
inorganic salts. They are employed in the same dose.] Their
efficacy as gastric anodynes and gastric astringents is much in-
creased by combination with a little morphine, and if given as
gastric sedatives the addition of sodium bicarbonate as well as
the morphine is an advantage. In such a prescription the bis-
muth subcarbonate is preferable to the subnitrate, for the latter
may act on the sodium bicarbonate and lead to the production
of sufficient carbon [dioxide] to drive the cork out of the bottle.
The salicylate has been largely used in various gastric disorders.
It is supposed to combine the virtues of bismuth salts with the
antiseptic action of salicylic acid. [Bismuth salicylate probably
passes through the stomach unchanged to be broken up in the
small intestine where it acts as an unirritating antiseptic. It has



THE SALTS OF ALUMINUM. 185

been proved to be a valuable remedy in the treatment of diar-
rhoeas, typhoid fever and catarrhs of the alimentary tract.
Heuppe's observations in Asiatic cholera prove that the tribro-
mophenolate is a valuable intestinal antiseptic. Bismuth sub-
gallate (dermatol) was formerly much employed in the treatment
of gastro-intestinal indigestion, but has been supplanted by the
more efficient naphtolate and tribromophenolate.

Eudoxin (not official) is bismuth tetra-iodophenol-phthaleinate,
and occurs as a tasteless, odorless, reddish -yellow, insoluble pow-
der. This is decomposed in the intestines, and is claimed to be
a germicide. It is certainly known that iodine is liberated. It
is employed as an intestinal antiseptic in dose of from 5 to 8

gr. ; .30 to .50 gm.

TOXICOLOGY.

When applied in large quantity to an exterior wounded surface sufficient
bismuth may be absorbed to produce poisoning. This may also occur if gly-
cerin is used to form an emulsion for injection into closed cavities (abscesses,
joint-disease).

Symptoms. These are acute stomatitis with a peculiar blackish discolora-
tion of the mucous membrane, generally upon the borders of the teeth and
extending over the whole mouth, ulceration of the mucous membrane, intestinal
catarrh, pain and diarrhoea. Even desquamative nephritis may be set up.

Treatment. Use demulcents.]

VI. ALUMINUM.



i. ALUMEN. Alum. Al 2 K 2 (SO i ) 2 +24H 2 O[=946.46. Synonyms.
Aluminum and Potassium Sulphate. Potassium Alum.

SOURCE. Made from Alum Slate or Shale (a mixture of Aluminum Sili-
cate and Iron Sulphide) by roasting and exposing to the air. By lixiviating
the heaps with water, Sulphuric Acid, Aluminum and Iron Sulphates are
obtained in solution. This solution is concentrated, and while hot mixed with
Potassium Chloride, which, reacting upon the Ferric Sulphate, yields Potas-
sium Sulphate and Ferric Chloride, while the Alum separates on cooling as a
crystalline powder. It is then purified by one or two recrystallizations. Also
by making an Aluminum Sulphate from A1(OH) 3 , the by-product in the
manufacture of Soda fmm cryolite.

CHARACTERS. Large, colorless, octahedral crystals, sometimes modified
by cubes, or in crystalline fragments, without odor, but having a sweetish and
strongly astringent taste. On exposure to the air, the crystals are liable to absorb
ammonia, and acquire a whitish coating.] Solubility, In 9 parts of water.



1 86 INORGANIC MATERIA MEDICA.

INCOMPATIBLE. Alkalies, lime, lead, mercury, and iron salts, tartrates
and tannic acid.

IMPURITIES. Ferrous sulphate and silicates.
Dose, 5 to 30 gr. ; [.30 to 2.00 gm.]

Preparation.

Alumen Exsiccatum. [Dried Alum. Synonyms. Alumen
Ustum. Burnt Alum.

SOURCE. Heat loo parts of Alum with moderate heat till aqueous
vapor ceases to be disengaged, and it is reduced to 55 parts.

CHARACTERS. A white, granular powder, without odor, possessing
a sweetish, astringent taste, and attracting moisture from the air. Sol-
ubility. Slowly hut completely soluble in 20 parts of water.

2. ALUMINI HYDRAS. Aluminum Hydrate. A1 2 (OH) 6 =I55.84.
Synonyms. Aluminum Hydroxide. Hydrated Alumina.

SOURCE. By separate solution of Alum, 100 ; and Sodium Carbonate,
100 in distilled water and heat. Mix the hot solutions, wash the precipitate
with hot distilled water, dry and reduce to a fine powder.

CHARACTERS. A white, light amorphous powder, odorless and tasteless,
permanent in dry air. Solubility. Insoluble in water or Alcohol.

Dose, i to 10 gr. ; [.06 to .60 gm.]

3. ALUMINI SULPHAS. Aluminum Sulphate. AL,(SO 4 ) 3 +i6
H,O=628.9.

SOURCE. Aluminum Hydroxide, A1(OH) S , a by-product in the manufac-
ture of Soda from cryolite, is dissolved in diluted Sulphuric Acid ; the solution
is filtered and evaporated to dryness.

CHARACTERS. A white, crystalline powder, without odor, having a
sweetish and afterwards astringent taste. Solubility. 1.2 parts of water;
almost insoluble in Alcohol.]

ACTION OF ALUMINUM SALTS.

External. They have no action on the unbroken skin, but
coagulate the albumin of the discharges from ulcers, sores, etc. ,
and thus form a protecting covering to the parts, and act as
efficient astringents. The albumin in the tissues themselves
is coagulated also. This coagulated albumin will compress and
occlude the vessels, and thus alum is haemostatic. Dried alum
absorbs water, and therefore its solid form is mildly caustic.
[Aluminum acetate (not official) in saturated solution is a very
penetrating antiseptic.]



THE SALTS OF ALUMINUM. 187

Internal. Alimentary tract. Alum is an excellent astrin-
gent for the mouth, stomach and intestines, and will cause con-
stipation. In large doses it is emetic, acting directly on the
stomach, and in larger still, irritant and purgative. Most, if not
all, is passed by the faeces ; probably, in medicinal doses, it has
no more remote effects on the tissues".

Nervous System. Given to animals, in large doses, it pro-
duces paresis, loss of sensation, forced movements, drowsiness
and death from respiratory paralysis.

THERAPEUTICS OF ALUMINUM SALTS.

External. Alum is occasionally used as a caustic to destroy
weak, exuberant granulations. Kaolin [a native aluminum sili-
cate, freed from gritty particles (not official)] is a good dusting
powder. Fuller's earth [of similar chemical composition] is
used [for the same purpose] . Kaolin resists most chemical re-
agents, and therefore it is used as a basis for making pills of such
bodies as phosphorus, silver nitrate or potassium permanganate,
for with them chemical reaction would occur if an ordinary basis
were used. [An excellent substitute for poultices is made as
follows : Kaolin, 1000 parts, is sifted and sterilized by heat ;
glycerin, 1000 parts, is added, the heat being continued and
mixed by stirring for half an hour. When nearly cool add boric
acid, 100 parts, and oil of peppermint, i ; oil of wintergreen, i ;
and oil of eucalyptus, 2 parts.] Because of its astringency alum
has many uses ; it may, for example, be applied to weeping ec-
zematous surfaces, and as an injection or on [moistened] lint for
vulvitis of children. Solutions of it have been used for leucor-
rhcea and gleet. Ten grains [; .60 gm.] to the fluid ounce;
[30. c.c.] of water is a common strength for most purposes.
Five grains [; .30 gm.] to the fluid ounce; [30. c.c.] make a
good eye wash or a gargle. Strong solutions, or powdered alum,
applied locally, stop bleeding, if it is not severe, such as occurs
from piles, leech-bites, slight cuts, the gums and the nose. [Al-
uminum naphtol-sulphonate (alumnol, not official) in i to 3 per
cent, solutions is an unirritating astringent which, although pre-
cipitating albumin, dissolves it when in excess and therefore pen-



1 88 INORGANIC MATERIA MEDICA.

etrates below the surface. It is used for the treatment of acute
and chronic inflammations of various mucous membranes.]

Internal. Alimentary canal. As a mouth wash or gargle
[1-2 to 100], alum is very valuable in ulcerative stomatitis, in
aphthous conditions of the mouth, and in slight pharyngitis or
tonsilitis. [Alum as a mouth wash attacks the enamel of the
teeth.] One part of alum with five parts of glycerin, painted
on with a camel's hair brush, is excellent for these conditions.
If the nose be irrigated with a solution of alum, it may remedy
a chronic ozaena. It has been found that other astringents are
preferable for bleeding from the stomach and for diarrhoea, but
a teaspoonful [4. gm.] of alum, dissolved in syrup, and given
every quarter of an hour till vomiting is produced, is an excel-
lent emetic for children, and may be used to produce vomiting
in laryngitis and bronchitis, as it is non -depressant. Alum whey,
obtained from milk curdled by alum, may be given in the diar-
rhoea of typhoid fever. In lead colic, alum may open the
bowels, probably because, being a sulphate, it precipitates any
lead salts as insoluble lead sulphates.



GROUP V.

Ferrum, Manganum.
It is probable that the action of these drugs is, in some respects, similar.

x. FERRUM.

Fe=55.88.

^^ I. FERRUM. [Metallic Iron in form of fine, bright and non-elastic
wire.]

Metallic Iron is pharmacopoeial in two forms, viz., this and reduced iron.

\_Metallic Iron is used to prepare Ferri lodidum Saccharajum, Ferri Chlori-
dum, Liquor Ferri Chloridi, and Syrupus Ferri lodidi.]

-V* a. FERRUM REDUCTUM. Reduced Iron. [Synonyms. Que-

venne's Iron. Iron by Hydrogen.] Metallic Iron with a variable amount
of oxide.

SOURCE. [Hydrogen gas is passed through a hot, closed tube which con-
tains freshly prepared, thoroughly washed Ferric Oxide. FejOj-f-3H 2 =Fe,-f-
3H,0.



THE SALTS OF IRON. 189

CHARACTERS. A very fine grayish-black lustreless powder, strongly at-
tracted by the magnet, without odor or taste. Solubility. Insoluble in water
or Alcohol. ]

IMPURITY. Sulphur.

[Reduced Iron is used to make Pilulae Ferri lodidi and Ferri lodidum Sac-
charatum.

Dose, i to 5 gr. ; .06 to .30 gm.]

The following ( viz. , the sulphate, the carbonate, [the iodide and the lac-
tate)] are ferrous salts, that is to say, salts of the lower Oxide, FeO.

3. FERRI SULPHAS. [Ferrous Sulphate. FeSO 4 +7 ^0=277.42.
Synonyms, If impure, Copperas. Green Vitriol.

SOURCE. Iron Wire is dissolved by boiling in Sulphuric Acid and water.
The sulphate is crystallized out. Fe 2 -j-2H 2 SO 4 =2FeSO 4 -f-2H 2 .

CHARACTERS. Large pale, bluish-green monoclinic prisms, having a
saline], styptic taste. Solubility. In 1.8 parts of water ; insoluble in Alcohol.

IMPURITIES. Ferric salts and copper.

[Ferrous Sulphate is used to make Ferri Carbonas Saccharatus, Liquor
Ferri Subsulphatis, Liquor Ferri Tersulphatis, and Massa Ferri Carbonatis.

Dose, Yz to 2 gr. ; .03 to .12 gm.]

Preparations.

1. Ferri Sulphas Exsiccatus. [Dried Ferric Sulphate. Approx-
imately 2FeSO 4 +3HjO=357.28.

SOURCE. Allow the sulphate to effloresce at 104 F. ; 40 C., and
heat in a porcelain dish until it weighs 64 to 65 parts.

CHARACTERS. A grayish-white powder, slowly but completely
soluble in water. ]

Dose, Y?, to 2 gr. ; [.03 to .12 gm.

Dried Ferrous Sulphate is used to make Pilulae Aloes et Ferri. ]

2. [Ferri Sulphas Granulatus. Granulated Ferrous Sulphate.
FeSO 4 -j-7 H 2 O=277. 42.

SOURCE. Dissolve Ferrous Sulphate, 100 ; in diluted Sulphuric
Acid, 5 ; and Distilled Water, loo ; pour upon it Alcohol, 25 ; and
filter, wash and dry the precipitate.

CHARACTERS. Pale, bluish-green, crystalline powder, which con-
forms to the reactions of the sulphate.

IMPURITIES. The same as of the sulphate.

Dose, ^ to 2 gr. ; .03 to .12 gm.]

3. Mistura Ferri Composita. Compound Iron Mixture. Syn-
onym. Griffith's Mixture. [Ferrous Sulphate, 7 ; Potassium Carbon-
ate, 8 ; Myrrh, 1 8 ; Sugar, 1 8 ; Spirit of Lavender, 60 ; Rose Water
to 1000.] It is a dark-green mixture containing Ferrous Carbonate,



I9O INORGANIC MATERIA MEDICA.



-f-



for Ferrous Sulphate and Potassium Carbonate react on each other.
Dose, 2 to 4 fi. dr. ; [8. to 15. c.c.]

4. [Pilulae Ferri Carbonatis. Pills of Ferrous Carbonate. Syn-
onyms. Ferruginous pills. Chalybeate pills. Blaud's pills.

Ferrous Sulphate, 1 6 ; Potassium Carbonate, 8 ; Sugar, 4 ; Traga-
canth, I ; Althaea, i gm. ; Glycerin and water ; to make 100 pills.

Dose, i to 2 pills.]

4. FERRI CARBONAS SACCHARATUS. [Saccharated Fer-
rous Carbonate. A powder containing Ferrous Carbonate FeCo 3 , made from
Ferrous Sulphate, 50 ; Sodium Bicarbonate, 35 ; Sugar, and distilled water by
solution and filtration.

CHARACTERS. A greenish-brown powder, of a sweetish, afterwards slightly
ferruginous taste.] It is a very unstable compound, being easily oxidized.
Solubility. Only partially in water.

IMPURITIES. [Sodium] Sulphate and excess of Ferrous Oxide.

Dose, 2 to 10 gr. ; [.12 to .60 gm.]

5. [MASSA FERRI CARBONATIS. Mass of Ferrous Carbonate.
Synonym. Vallet's Mass. Ferrous Sulphate, loo ; Sodium Carbonate, loo ;
Clarified Honey, 38 ; Sugar, 25 ; Syrup and distilled water to 100. By solu-
tion, precipitation and evaporation.

Dose, i to 5 gr. ; .06 to .30 gm.

6. FERRI IODIDUM SACCHARATUM. Saccharated Ferrous
Iodide.

SOURCE. From Iron Wire, 6; Reduced Iron, I; Iodine, 17 ; distilled
water, Sugar of Milk to loo. By solution, filtration, evaporation and trituration.

CHARACTERS. A yellowish-white powder, very hygroscopic, odorless,
having a sweetish ferruginous taste. Solubility. In 7 parts of water; only
partially soluble in Alcohol.

Dose, 5 to 15 gr. ; .30 to i.oo gm.]

7. SYRUPUS FERRI IODIDL [Syrup of Ferrous Iodide. A
syrupy liquid, containing 10 per cent, by weight of Ferrous Iodide. Iron
Wire, 25 ; Iodine, 83 ; Syrup and distilled water, a sufficient quantity to 1000.

CHARACTERS. A transparent, pale-green liquid, odorless, having a sweet
strongly ferruginous taste and a neutral reaction. Sp. gr. about 1.353.
Dose, 5 to 30 m. ; .30 to 2.00 c.c.]

8. PILULAE FERRI IODIDI^[Pills of Ferrous Iodide. Triturate
Reduced Iron 4, with Iodine 5, and water ; add Glycyrrhiza I, Sugar 4, Ex-
tract of Glycyrrhiza I, and Acacia I gm., with sufficient water, Balsam of
Tolu and Ether, and evaporate to make loo pills.] To be preserved from
light and air as much as possible, as they do not keep well.

Dose, i to 2 pills.



THE SALTS OF IRON. 19!

g. [FERRI LACTAS. Ferrous Lactate. Fe(C 3 H 5 O 3 ) 2 -f3H 2 O=

287.34.

SOURCE. By crystallization from a solution of Lactic Acid and Iron in
distilled water.

CHARACTERS. Pale, greenish-white crusts, consisting of small needle-
shaped crystals, having a slight, peculiar odor, and a mild, sweetish ferruginous
taste. Solubility. In 40 parts of water, and almost insoluble in Alcohol.

Ferrous Lactate is used in Syrupus Hypophosphitum cum Ferro.

Dose, i to 5 gr. ; .06 to .30 gm.]

The following (viz., the Chloride, the Tersulphate, the Nitrate, the Sub-
sulphate, the Citrate, the Acetate, the Hydrate [the Ammonium Sulphate, the
Hypophosphite and the Valerianate] are Ferric Salts : they are compounds of
the higher Oxide, Fe 2 O 3 . Most are official in the form of liquors.

10. [FERRI CHLORIDUM. Ferric Chloride. Fe 2 Cl 6 -fi2H 2 O=

539-5-

SOURCE. Iron Wire, 15 ; Hydrochloric Acid, and distilled water to 60.
By solution in water with heat, filtration, addition of Nitric Acid, and crystal-
lization.

CHARACTERS. Orange-yellow, crystalline pieces, very deliquescent, hav-
ing a faint odor of Hydrochloric Acid and strongly styptic taste. Solubility.
Freely in water, Alcohol and Ether.]

IT. LIQUOR FERRI CHLORIDI. [Solution of Ferric Chloride.
An aqueous solution of Ferric Chloride (Fe 2 Cl 6 =323.98), containing about
37.8 per cent, of the Anhydrous Salt, or corresponding to about 13 per cent,
of Metallic Iron.

SOURCE. Dissolve Iron Wire, 15.8, in Hydrochloric Acid, 870, and
water to looo. Fe-)-2HCl=FeCl 2 -|-H 2 . Nitric Acid is also added, and
thus the Ferrous is converted into Ferric Chloride. 6FeCl 2 -f-6HCl-(-2HNO 3
= 3 Fe 2 Cl 6 + 4 H 2 0+2NO.

CHARACTERS. A reddish-brown liquid, having a faint odor of Hydro-
chloric Acid, and an acid, strongly styptic taste. Sp. gr. about 1.387.]

IMPURITIES. Ferrous salts.

Dose, 2 to 10 m. ; [.12 to .60 c.c.]

Preparations.

I. Tinctura Ferri Chloridi. [Tincture of Ferric Chloride. So-
lution of Ferric Chloride, 250 ; Alcohol to looo.

CHARACTERS. A bright, brownish liquid, having a slightly ethe-
real odor, a very astringent, styptic taste, and an acid reaction. Sp. gr.
about 0.960.]

Dose, 5 to 60 m. ; [-30 to 4.00 c.c.]



192 INORGANIC MATERIA MEDICA.

2. Liquor Ferri et Ammonii Acetatis. [Solution of Iron and
Ammonium Acetate. Synonym. Basham's Mixture. Tincture of
Ferric Chloride, 20 ; diluted Acetic Acid, 30 ; Solution of Ammonium
Acetate, 200; Aromatic Elixir, 100; Glycerin, 120; water to looo.

Dose, i to 4 fl. dr. ; 4. to 15. c.c.]

12. LIQUOR FERRI TERSULPHATIS. [Solution of Ferric
Sulphate. An aqueous solution of normal Ferric Sulphate (Fe i (SO 4 ) J =399.2),
containing about 28. 7 per cent of the salt, and corresponding to about 8 per
cent of Metallic Iron.

SOURCE. A hot solution of Ferrous Sulphate, 400 ; in Sulphuric Acid,
78 ; and water, is boiled with Nitric Acid and water to looo. 6FeSO 4 +
3H 1 S0 4 +2HNO J = 3 Fe J (S0 4 ) s + 4 H 2 0-f-2NO.

CHARACTERS. A dark reddish-brown liquid, having an acid, strongly
styptic taste, and an acid reaction. Sp. gr. about 1.320.]

13. LIQUOR FERRI NITRATIS. [Solution of Ferric Nitrate.
Fe,(NOj)g=483. 1. An aqueous solution containing about 6.2 per cent, of the
Anhydrous Salt, and corresponding to about 1.4 per cent, of Metallic Iron.

SOURCE. Precipitate Ferric Sulphate, 180; with Ammonia water, 160;
wash thoroughly and dissolve in Nitric Acid, 71 ; distilled water to 1000.

CHARACTERS. A clear, amber-colored or reddish liquid, having an acid,
styptic taste, and an acid reaction. Sp. gr. about 1.050.]

IMPURITIES. Ferrous salts.

Dose, 2 to 10 m. ; [.12 to .60 c.c.]

14. LIQUOR FERRI SUBSULPHATIS. [Solution of Ferric
Subsulphale. Synonym. Monsel's solution. An aqueous solution of Basic
Ferric Sulphate of variable chemical composition, corresponding to about 13.6
per cent of Metallic Iron.

SOURCE. From Ferrous Sulphate, 675 ; Sulphuric Acid, 65 ; Nitric Acid,
65 ; distilled water to 1000.

CHARACTERS. A dark, reddish-brown liquid, odorless, having an acid,
strongly styptic taste, and an acid reaction. Sp. gr. about 1.550.

Dose, 2 to 10 m. ; .12 to .60 c.c.]

15. LIQUOR FERRI CITRATIS. [Solution of Ferric Citrate.

An aqueous solution of Ferric Citrate, corresponding to about 7.5 per cent,
of Metallic Iron.

SOURCE. From solution of Ferric Sulphate, 1050 ; in water ; precipitation
with Ammonia Water, 880 ; with addition of Citric Acid, 300 ; filtration and
evaporation of filtrate to loco.

CHARACTERS. A dark-brown liquid, odorless, having a slightly ferru-
ginous taste, and an acid reaction. Sp. gr. 1.250.

Dose, 5 to 15 m. ; .30 to i.oo c.c.]



THE SALTS OF IRON. 193

16. LIQUOR FERRI ACETATIS. [Solution of Ferric Acetate.
Fe 2 (C 2 H 3 O 2 ) 6 =464.92. An aqueous solution of Ferric Acetate.

SOURCE. Ferric Sulphate, 1000 ; is precipitated with a solution of Am-
monia Water, 850. Fe 2 (SO 4 ) 3 -f6NH 4 OH=Fe 2 (OH) 6 +3(NH 4 ) 2 SO 4 . The re-
sulting hydrate is dissolved in Glacial Acetic Acid, 260. Fe 2 (OH) 6 -|-6HC 2 H 3 Oj
=Fe 2 (C 2 H 3 2 ) 6 +6H 2 0.

CHARACTERS. A dark, reddish-brown, clear liquid of an acetous odor, a
sweetish, acidulous, somewhat styptic taste. Sp. gr. about 1.160.

Dose, 2 to 10 m. ; .12 to .60 c.c.]

17. FERRI OXIDUM HYDRATUM. [Ferric Hydrate. Fe 2 (OH 8 )
=213.52. Synonyms. Hydrated Ferric Oxide. Ferric Hydroxide.

SOURCE. Add to a solution of Ferric Sulphate, zoo ; Ammonia Water,
no. The precipitate is Ferric Hydrate.

CHARACTERS. A reddish-brown magma, wholly soluble in Hydrochloric
Acid without Effervescence.

Dose, i to 4 dr. ; 4. to 15. c.c.]

Preparations.

1. Emplastrum Ferri. [Iron Piaster. Synonym. Strengthen-
ing Plaster. Ferric Hydrate, 90 ; Burgundy Pitch, 140 ; Lead Plaster,
720 ; Olive Oil, 50.

2. Trochisci Ferri. Troches of Iron. Ferric Hydrate, 30 ;
Vanilla I ; Sugar, loo gm. ; Mucilage of Tragacanth, to make loo
troches.

Dose, i to 2 troches.]

18. FERRI OXIDUM HYDRATUM CUM MAGNESIA.

Ferric Hydrate with Magnesia. [Synonym. Arsenic Antidote. Solution of
Ferric Hydrate, 50; add to the Iron, water, 100. Magnesia, 10 ; add water
to the Magnesia to 750. Keep in separate bottles.

USES. For arsenical poisoning, for which it should be mixed by adding
the magnesia mixture gradually to the iron solution, and shaking until a homo-
geneous mass results. It should be given in large doses and frequently re-
peated.]

19. FERRI ET AMMONII SULPHAS. [Ferric Ammonium
Sulphate. Synonyms. Ammonio-Ferric Sulphate. Ammonio- Ferric Alum.
Fe 2 (NH 4 ) 2 (S0 4 ) 4 +2 4 H 2 0=962. i.

SOURCE. From crystallization of Ammonium Sulphate in a solution of
Ferric Sulphate.

CHARACTERS. Pale, violet, octahedral crystals, efflorescent, odorless, hav-
ing an acid, styptic taste, and a slightly acid reaction. Solubility. In 3 parts
of water ; insoluble in Alcohol.

Dose, 2 to 10 gr. ; .12 to .60 gm.

13



194 INORGANIC MATERIA MEDICA.

20. FERRI HYPOPHOSPHIS. See Phosphorus.

21. FERRI VALERIANAS. See Valeriana.]

The following are scale preparations of Iron, so called because they are



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