OH), formed by the addition of hydroxylamine to the aldehyde, exhibits a characteristic behaviour when hydrochloric acid gas is passed into its ethereal solution, a second modification being produced.
The precipitated sodium chloride is filtered, and the solution of hydroxylamine distilled in order to remove methyl alcohol, and finally fractionated under reduced pressure.
This is boiled for some hours with water and the solution cooled, when potassium sulphate separates first, and then hydroxylamine sulphate.
Pure anhydrous hydroxylamine has been obtained by C.
Scholl's formula; he found that the synthetic silver salt of glyoxime peroxide resembled silver fulminate in yielding hydroxylamine with hydrochloric acid, but differed in being less explosive, and in being soluble in nitric acid.
Hydroxylamine as thus isolated in the free state is a very hygroscopic substance, which rapidly liquefies when exposed to air, owing to the absorption of water.
About a hundred grammes of hydroxylamine hydrochloride, NH{2}OH.
To this solution a quantity of sodium dissolved in methyl alcohol was added, in such proportion that the hydrochloride of hydroxylamine was present in slight excess over and above that required to convert it to sodium chloride.
By the action of hydroxylamine or phenylhydrazine on aldehydes or ketones, condensation occurs between the carbonyl oxygen of the aldehyde or ketone and the amino group of the hydroxylamine or hydrazine.
Dilute solutions give the same reaction, although very slowly, but by decomposing a solution of the sulphate with barium hydroxide a certain amount of hydroxylamine is obtained in solution (it is partly decomposed).
Sometimes, and especially with dilute solutions of nitric acid, the deoxidation proceeds as far as the formation of hydroxylamine and ammonia, and sometimes it leads to the formation of nitrogen itself.
After concentrating the alcoholic solution the hydroxylamine hydrochloride separates in crystals.
Hydroxylamine in aqueous solution, like ammonia, precipitates basic hydrates, and it deoxidises the oxides of copper, silver, and other metals.
Hydroxylamine is obtained in a great number of cases, for instance by the action of tin on dilute nitric acid, and also by the action of zinc on ethyl nitrate and dilute hydrochloric acid, &c.
As regards the passage of hydroxylamine into hydrazine, it would be accompanied by the evolution of heat (+21·5 C.
Thus Raschig (1888) proposed the following method for the preparation of the hydroxylamine sulphate.
They react with hydroxylamine and phenylhydrazine, with the formation of aldoximes and hydrazones.
On the addition of phenylhydrazine it gives a phenylhydrazone, and with hydroxylamine furnishes an C6H5\ C=N.
Defn: One of a series of isonitroso derivatives obtained by the action of hydroxylamine on aldehydes or ketones.
One of a series of isonitroso derivatives obtained by the action of hydroxylamine on aldehydes or ketones.
The above list will hopefully give you a few useful examples demonstrating the appropriate usage of "hydroxylamine" in a variety of sentences. We hope that you will now be able to make sentences using this word.
