Phenylhydrazine is liberated from the hydrochloride so obtained by adding sodium hydroxide, the solution being then extracted with ether, the ether distilled off, and the residual oil purified by distillation under reduced pressure.
By the addition of barium chloride to the sulphate, a solution of the hydrochloride is obtained, from which the crystallized salt may be obtained on evaporation.
After concentrating the alcoholic solution the hydroxylamine hydrochloride separates in crystals.
The condensation product of b-naphthol above referred to precipitates gelatine and aniline hydrochloride and gives a brown coloration with ferric chloride.
With gelatine and aniline hydrochloride it exhibits reactions similar to those given by the diphenylmethane condensation products; its tanning properties also are similar to those of the latter.
An aqueous solution of the product completely precipitates gelatine, gives a strong opalescence with aniline hydrochloride and a deep violet coloration with ferric chloride.
The fact that a positive reaction is given with aniline hydrochloride [Footnote: This reaction is carried out as follows:--5 c.
In order to purify the crude rosaniline hydrochloride it is washed with a small quantity of water, redissolved in boiling water slightly acidulated with hydrochloric acid, filtered, and allowed to crystallise.
At one time the hydrochloride was used instead of the free base, on account of its greater solubility, but now a base is made which is sufficiently pure to be very soluble in water.
An illustration of the process is as follows: 73 grams para-amido phenol hydrochlorideare dissolved with 40 grams caustic soda in a liter of water.
Well-dried hydroxylamine hydrochloride is dissolved in methyl alcohol and mixed with sodium methylate; a solution of methyldichloramine in absolute ether is then added and an ethereal solution of diazomethane distils over.
C(CO2C2H5)2, is similarly prepared by the action of nitrous acid on the hydrochloride of aspartic ester.
The hydrochloride of hydrastinine, an alkaloid obtained synthetically from hydrastine.
The hydrochloride of the alkaloid emetine, obtained from ipecac.
Assayed by testing against a standard solution of beta-iminazolyl-ethylamine hydrochloride by the method of the U.
The acetate and hydrochloride are met with in commerce, but are not officinal.
Neuridine hydrochloride is capable of sublimation, and at the same time it is decomposed, for the sublimed needles show red or blue colours.
CH{3} The nitrate and hydrochloride are at present much used in pharmacy.
The hydrochlorideis soluble in alcohol and in water, melting-point about 205 deg.
The salts are soluble in water; the hydrochloride may be obtained by passing gaseous HCl into anhydrous ether.
It gives a precipitate with potassium iodide if a solution of the hydrochloride be used.
By boiling it for twelve hours with alcohol and strong hydrochloric acid the compound may be broken up into hydrochlorideof putrescine and free benzoic acid.
Trimethyloxyammonium= hydrochloride causes similar symptoms to neurine, but the action is less powerful.
The hydrochloride is soluble in water and absolute alcohol; neurine hydrochloride and betaine hydrochloride are but little soluble in absolute alcohol, therefore this property can be utilised for their separation from choline.
This hydrochloride is a slightly yellow powder, only sparingly soluble in water, and carbonising without melting when heated to 287 deg.
Hydrochloride of nicotine is more easily volatilised than the pure base.
It is usually accompanied by choline, from which it can be separated by converting the bases into hydrochlorides, cholinehydrochloride being soluble in absolute alcohol, neuridine scarcely so.
The hydrochloride crystallises in colourless needles, insoluble in alcohol, readily soluble in water.
By a similar operation, using ethyl alcohol, or spirit of wine, diethylaniline can be obtained, and by heating dry aniline hydrochloride with aniline under similar conditions a crystalline base called diphenylamine is also prepared.
In a similar way, by heating xylidine hydrochloride and methyl alcohol for some time in a closed vessel at about 300 deg.
There is one other use for aniline yellow which dates from the year of its discovery, when Dale and Caro found that by adding sodium nitrite to aniline hydrochloride and heating the mixture, a blue colouring-matter is produced.
Mix the heroinehydrochloride with the alcoholic solution of saccharin (in a hot mortar if in a hurry), and permit the alcohol to evaporate.
Mix the heroine hydrochloride with the saccharin and the tincture of vanilla, and allow alcohol to evaporate.
Mix the heroine hydrochloride with the alcoholic solution of saccharin (in a hot mortar if in a hurry) and permit the alcohol to evaporate; then add the vanilla cacao sugar.
Mix the pilocarpine hydrochloride with the sugar by thorough trituration in a mortar, add the cacao powder and triturate again until the color is perfectly uniform.
It consists of a hydrochloride or acetate of rosaniline.
To render anæsthesia more complete, the affected part may be finally rubbed over with a crystal of solid cocaine hydrochloride just before the operation--is begun.
Quinine and urea hydrochloride is one of the new substitutes which has found much favor.
It consists of a molecule of quinine hydrochloride and one of urea.
For the latter chloroxyl, the hydrochloride of phenylcinchoninic acid, is recommended.
Such acidity is caused through the dissociation of magnesium chloride intohydrochloride acid and magnesia under high temperatures.
Defn: A liquid resembling camphene, obtained by treating turpentine hydrochloride with lime.
A liquid resembling camphene, obtained by treating turpentine hydrochloride with lime.
The precipitate is dried, and by concentrating the aqueous solution a further quantity of the hydrochloride is obtained.
A white bulky precipitate of cocaine hydrochloride is obtained, together with an aqueous solution of the same compound, while the petroleum is free from the alkaloid and may be used for the extraction of a fresh batch of leaves.
About five minutes after a few drops of a solution of hydrochloride of Cocaine composed of 0.
Grasset, of Montpelier, almost at the same time as Vulpian, observed the same effects of Cocaine, but a greater persistency in the phenomena of insensibility following the intravenous injection of the solution of hydrochloride of Cocaine.
When this is done, no more phenylhydrazine hydrochloride is obtained by concentration of the mother liquor.
The free base is liberated by adding to the phenylhydrazine hydrochloride 1 l.
The phenylhydrazine hydrochloride precipitates in the form of slightly yellowish or pinkish crystals which may be filtered off and dried.
The phenylhydrazine hydrochloridemay be purified by crystallizing from water.
The hydrochloride of methyl red is only sparingly soluble in cold water, and is apt to separate in blue needles if the acidity is not sufficiently reduced.
If the sodium sulfite-diazonium salt mixture is acidified before warming or before becoming dark, the red color of the solution does not disappear on heating, and the precipitated phenylhydrazine hydrochloride obtained is colored red.
The precipitate of nitroso dimethylaniline hydrochloride is filtered off with suction, then washed with about 300 cc.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "hydrochloride" in a variety of sentences. We hope that you will now be able to make sentences using this word.
