A dilute solution of the iodides in question in pure alcohol is formed, in the proportion of 2 or 3 gr.
Free iodine may be eliminated from solutions of iodides by chlorine, nitric acid, concentrated sulphuric acid and peroxide of manganese, and may be made evident by adding starch-paste.
Iodides give a pale yellowish precipitate with nitrate of silver, scarcely soluble in ammonia, and insoluble in dilute nitric acid; a bright yellow one with acetate of lead; and a scarlet one with bichloride of mercury.
Its solution dissolves the iodine freely, and also, less readily, several of the insoluble metallic iodides and oxides.
Iodides are treated, as the bromides and chlorides, in a bead of microcosmic salt with oxide of copper.
Fused with potassium bisulphate in an ignition tube the violet vapors of iodine are evolved, and thus iodides may be distinguished from chlorides and bromides.
The corresponding iodidesare obtained by the addition of potassium iodide to solutions of the sulphonates, and are optically active antipodes.
Ammonia finds a wide application in organic chemistry as a synthetic reagent; it reacts with alkyl iodides to form amines (q.
By the action of ammonia on the alkyl iodides a complex mixture of primary, secondary and tertiary amines, along with a quaternary ammonium salt, is obtained, the separation of which is difficult.
The primary amines may also be prepared by heating the alkyl iodides with ammonia (A.
The mixed secondary amines are prepared by the action of alkyl iodides on the primary amines, or by heating salts of the primary amine with alcohols under pressure.
They combine readily with the alkyl iodides to form alkyl acridinium iodides, which are readily transformed by the action of alkaline potassium ferricyanide to N-alkyl acridones.
We may also notice that thio-ethers combine with alkyl iodides to form sulphine or sulphonium compounds, R3:SI.
It is possible that the eulogies upon the iodides owe their origin to the successful treatment of syphilitic arteriosclerosis, in which condition these drugs have a specific action.
The action of the iodides is to lower the blood pressure, and they are of greatest value when the blood pressure is high, and when headache and precordial pain are present.
Medicinal= It has long been thought that the iodides have some specific effect on the advancing arteriosclerosis, checking its spread, if not really aiding nature to a limited restoration of the diseased arteries.
Personally I have never yet seen a patient who could not take the ordinary iodides in some form or other, and I am opposed to ready made drugging.
By heating magnesium filings with methyl and ethyl iodides A.
The compounds formed by the action of magnesium on alkyl iodides in the cold have been largely used in synthetic organic chemistry since V.
The iodides and bromides of silver and lead are sparingly soluble in water, like the chlorides of these metals.
The solubility of the bromides and iodides varies in the same proportion.
If a solution of potassium iodide is added to solutions of a mercurous and a mercuric salt respectively, the corresponding iodides are precipitated.
Potassium iodide (KI) is the most familiar of the iodides and is largely used in medicine.
Müntz has shown that soil is capable of oxidising iodidesto hypo-iodides and iodates, and bromides to hypo-bromides and bromates.
Iodine and Iodides are largely used in the laboratory, and have already been frequently referred to.
Most iodides are soluble in water or dilute acids.
Iodides are detected by boiling with strong solutions of ferric sulphate or chloride.
Iodine does not occur in nature in the free state; and iodidesare rare, iodargyrite or iodide of silver (AgI) being the only one which ranks as a mineral species.
It cannot be used in alkaline solutions, since it reacts with the hydrates, and even with the carbonates, to form iodides and iodates.
The cyanides ought perhaps to be considered along with chlorides, bromides and iodides in Chapter XV.
Tri-Iodides is a dark brown, mobile liquid having a faint clove-like odor and a mawkish, sweet taste.
But burnt sponge (spongia usta), which contained the iodidesof sodium and potassium, had been used to dissipate goitrous and scrofulous swellings many hundreds of years before the time of Lugol.
The medicinal remedies which do any good are the iodides--notably the iodides of ammonium, of iron, of manganese, etc.
It must be admitted, however, that in certain catarrhal affections of a gouty nature the iodides of potassium and sodium are almost specific in their good effects.
The temporary subsidence of enlargement under the influence of mercury and the iodidesseems sure to be followed, sooner or later, by reproduction of the deformity.
The potassium salt reacts with the alkyl iodides to give N-substituted alkyl derivatives.
These compounds may be obtained by heating the alkylen iodides or bromides (e.
In 1876, Kohlrausch compared the conductivity of the chlorides, bromides, and iodides of potassium, sodium, and ammonium respectively.
The above considerations apply equally to the chlorides and chlorates, the iodides and iodates, the sulphides and sulphates, and in general to all chemical salts.
It combines with alkaline iodides to form very unstable compounds.
Metallic iodides and bromides behave upon charcoal in a similar manner to the chlorides.
When the metallic iodides are fused with the microcosmic salt and copper, as previously indicated, they impart a green color to the flame.
When the metallic iodides are fused in a glass tube, closed at one end, with the bisulphate of potassa, the vapor of iodine is liberated, and may be recognized by its characteristic color.
Those principally deserving of mention are the bromides and iodides of potassium and sodium.
The most valuable drugs for the treatment of the manifestations of the tertiary period are the arsenical preparations and the iodides of sodium and potassium.
It is advisable to continue the iodides for from one to three months after the lesions for which they are given have cleared up.
Healing: rapid under support of veins, mercury and antiseptic operate and remove iodides necessary, treatment.
In addition, mercurial rubs and the administration of iodides and mercury internally are advised.
Good positive collodion should have as many as 8 grains of the iodides and bromides to the ounce, requiring a silver solution not lower than 50 grains strong and going somewhat higher in cold weather.
The disadvantages of ‘iodism’ and nausea frequently associated with iodides never occur with Collosol Iodine.
In most cases, “mixed treatment” the giving of mercury and iodides is required to get satisfactory results.
Iodine does not produce ‘iodism’ as quickly as the alkaline iodides do because it is eliminated more quickly and more perfectly than the alkaline iodides.
In his paper process, does not the soaking in water after iodizing merely take away a portion of iodides of silver and potassium from the paper; or, if not, what end is answered by it?
There should be less of the iodides contained in it, and it should be more fluid.
This is especially the case with the chlorides of potassium or barium, the bromides of strontium or calcium, and the iodides of aluminum or magnesium.
Analogous bromine and iodine compounds are unknown, since bromides and iodides on heating with potassium bichromate and concentrated sulphuric acid give free bromine or free iodine.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "iodides" in a variety of sentences. We hope that you will now be able to make sentences using this word.
