Water decomposes it, a small quantity of water leading to the formation of the oxybromide, AsOBr, whilst a large excess of water gives arsenious oxide, As4O6.
It is easily oxidized by heating with concentrated nitric acid to arsenic acid, and with concentrated sulphuric acid to arsenic trioxide; dilute nitric acid only oxidizes it to arsenious acid.
It easily burns, forming arsenious oxide if the combustion proceeds in an excess of air, or arsenic if the supply of air is limited; it is also decomposed into its constituent elements when heated.
Water decomposes it into arsenious oxide and ammonia, and when heated to 60 deg.
Externally arsenious acid has been much used by quack doctors to destroy morbid growths, &c.
Arsenic and arsenical compounds generally can be detected by (a) Reinsch's test: A piece of clean copper is dipped in a solution of an arsenious compound which has been previously acidified with pure hydrochloric acid.
According to Binz and Schultz its power is due to the fact that it is an oxygen-carrier, arseniousacid withdrawing oxygen from the protoplasm to form arsenic acid, which subsequently yields up its oxygen again.
In the Marsh test the solution containing the arsenious compounds is mixed with pure hydrochloric acid and placed in an apparatus in which hydrogen is generated from pure zinc and pure sulphuric acid.
In Fleitmann's test, the solution containing the arsenious compound is mixed with pure potassium hydroxide solution and a piece of pure zinc or aluminium foil dropped in and the whole then heated.
The solution of arsenious oxide in water reacts acid towards litmus and contains tribasic arsenious acid, although on evaporation of the solution the trioxide is obtained and not the free acid.
The commonest source of arsenical poisoning is the arsenious acid or white arsenic, which in one form is white and opaque, like flour, for which it has been mistaken with fatal results.
By the action of gaseous ammonia on arsenious halides at -30 deg.
Pertaining to, or derived from, arsenic, when having an equivalence next lower than the highest; as, arsenious acid.
Pertaining to, consisting of, or containing, arsenic; as, arsenious powder or glass.
Cupric arsenite, when heated, gives off arsenious acid and water, leaving a residue of arsenide of copper and copper arseniate.
It may be directly prepared by mixing boiling aqueous solutions of equal parts of crystallised verdigris andarsenious acid.
Fowler's solution is the best-known medicinal preparation of arsenic, and contains 1 grain of arsenious anhydride in 110 minims.
If this foil be dried, cut up, put in a reduction-tube, and heated, crystals of arsenioustrioxide will be deposited on the cold part of the tube.
The arsenites give the reactions of arsenious acid.
The arsenious acid resulting from the reduction of this arsenic acid is generally obtained in the form of a lime salt after the removal of the magenta by the purifying processes to which the crude product is submitted.
From the arsenical waste arsenious acid can be recovered, and converted back into arsenic acid by the action of nitric acid.
Arsenious acid, as contained in Fowler's solution, a remedy already twice named among Catalytics, is also the most powerful of these Antisquamic agents.
Darwin cured a case in which the beats of the heart intermitted regularly once in every three or four times, by the administration of four drops of a saturated solution of Arsenious acid three times a day.
But the dangerous nature of its action is such as to demand considerable care in the administration of the preparations of Arsenious acid.
Caustic substances probably act locally in these cases; but Arsenious preparations exert an Antiperiodic influence in the blood generally.
And, first, “many insoluble basic salts ofarsenious acid are known not to be poisonous.
For example, in case of poisoning by arsenious acid, if hydrated peroxide of iron is administered, the destructive agency is instantly checked.
The only danger to be avoided is that of over-firing, which is produced by too great heat of a prolonged duration of firing, which causes the stannic and arsenious acids in the white to volatilize.
White enamel is made by the addition of stannic and arsenious acids to the flux.
If arsenious acid be mixed with freshly-burnt powdered charcoal, and heated in a small test tube, a ring of shining metallic arsenic of a grey color will be found on the cool portion of the tube, and an odor of garlic is perceptible.
If this deposit be driven about from place to place it will gradually become oxidized, and octahedral crystals of arsenious acid formed.
This gentleman gave, and saw a Styrian eat, a piece of arsenious acid, weighing over four grains, and afterwards determined the presence of arsenic in urine passed in his presence by the said peasant.
Not a few lives have been sacrificed from the application by ignorant quacks of a mixture of arsenious acid, realgar, and oxide of iron to ulcerating cancers.
Further, if the tube be divided and the part containing the arsenious acid be washed out with distilled water, the liquid tests may be applied to the solution.
Arsenious acid is found in commerce in the form of a white powder or in small opaque cakes.
In its solid state arsenious acid may be known by the following properties.
And, first, "many insoluble basic salts of arseniousacid are known not to be poisonous.
The distillate, on now being treated with SH{2}, gives arsenious sulphide free from organic matter.
Fly-water= is a strong solution of arsenious acid of uncertain strength, sweetened with sugar, treacle, or honey.
Ferric hydrate converts the soluble arsenious acid into the insoluble ferric arseniate, the ferric oxide being reduced to ferrous oxide.
The hydrochloric solution of arsenic is simply arsenious acid dissolved in hydrochloric acid; its strength should be exactly the same as that of Fowler's solution.
In one of Brodie's[739] experiments on rabbits, 7 grains of arsenious acid were inserted in a wound in the back; the effect of which was to paralyse the hind legs.
The conversion of the above to phenyl arsenious oxide.
Mr Davies uses glycerin as a solvent for the arsenious acid.
It yielded, when concentrated and precipitated by sulphuretted hydrogen, upwards of one half of the original arsenious acid in a fit state for examination.
This gas is produced whenever arseniousor arsenic acid, or any of their salts, is in presence of nascent hydrogen.
Vogel found that in a normal solution of arsenious acid that had been prepared for using in the above process, half the quantity of the arsenious acid became oxidised to arsenic acid in the course of about a year.
For the arsenious acid solution arsenite of soda is substituted, and for the indigo solution a colourless iodised paper, which is turned blue by the smallest quantity of free acid.
Arsenious anhydride also affords a brilliant combustion, forming the liquid trifluoride of arsenic, AsF{3}.
Arsenious acid (white arsenic) in doses of from 3 to 6 grains three times daily is a good tonic for such cases.
Arsenious acid in tonic doses (3 to 7 grains) three times daily may be given.
It is best administered in the form of a solution of arsenic, as Fowler's solution or as the white powdered arsenious acid.
Of the acetate of alumine at five degrees, saturated with arsenious acid.
Arsenious acid preserves bodies very well, but a single subject would require a killogram!
Arsenious acid and sulphuric, a new compound of, xli, 47.
Among minor reagents suggested as purifying substances for acetylene may be mentioned potassium permanganate, barium peroxide, potassium bichromate, sodium plumbate and arsenious oxide.
The use of arsenious oxide dissolved in a strong acid, and the solution absorbed in pumice or kieselguhr has been protected by G.
Heated upon charcoal, metallic arsenic is volatilized before it melts, and incrusts the charcoal in the flame of oxidation as a white deposit of arsenious acid.
This metal is volatilized without fusing, and covers the charcoal both in the oxidizing and reducing flames with a deposit of arsenious acid.
Heated in oxygen gas, it is inflamed, and burns with a pale blue flame to arsenious acid.
As antimonious acid is not so volatile asarsenious acid, they may thus be easily distinguished from one another.
Arsenic acid yields, heated strongly in a glass tube closed at one end, oxygen and arsenious acid, the latter of which sublimes in the cool portions of the tube.
Fuses and passes off asarsenious and sulphurous acids.
Arsenious acid sublimes in both glass tubes very readily, as a white crystalline sublimate.
Evolves SO^{2} and a white sublimate ofarsenious acid.
Sulphurous and arsenious acids are evolved, the latter forming a white sublimate.
After a short time, the temperature is increased to a low red heat, at which the arsenious acid is reduced and the metallic arsenic sublimed, and which re-condenses in the neck of the bulb.
Alloys of arsenic are converted into basic arseniates of metal oxides, while surplus arsenic is converted into arsenious acid, which sublimes on the tube.
The sublimate of arsenious acid which surrounds the assay, will give the same blue flame, when dissipated by the oxidation flame.
As is the case with arsenious acid, the antimonious acid may, by dexterous heating, be driven from one portion of the tube to another.
Any remaining sulphur is thus removed, and the arsenious sulphide may then be weighed.
Arsenious oil applied to scalp to cure vermin caused death on 10th day.
On being allowed to repose, it deposited a white powder, which was found on examination to possess the external characters and all the chemical properties peculiar to arsenious acid, that is, the common white arsenic of the shops.
This is a most delicate test, asarsenious sulphide is only soluble to the extent of one part in one million of water (Fresenius, Quant.
Arsenious acid and gum to the head, caused death in 36 hours.
He had heard of its use as a depilatory, but then mixed with other matters, as lime, and it was not arsenious acid, but usually the yellow sulphide, that was used for this purpose.
On heating the coated copper in a glass tube, the peculiar odour of arsenic was distinctly perceptible, and a white crystalline sublimate was produced, possessing the properties peculiar to arsenious acid.
A less preferable way is to collect the arsenious sulphide on a weighed filter, to dry, and dissolve out any sulphur by carbon disulphide.
This later Circe gained large sums of money by the sale of certain mysterious preparations she compounded, which were afterwards proved to be simply solutions of arsenious acid.
Maclagan, of Edinburgh, states he saw a Styrian eat a piece of arsenious acid weighing over four grains.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "arsenious" in a variety of sentences. We hope that you will now be able to make sentences using this word.
