Nitrite Sentence Examples
It is also formed by the action of concentrated sulphuric acid on sodium nitrite in the presence of mercury.
It may be prepared by the addition of potassium nitrite to an acetic acid solution of cobalt chloride.
This salt may be used for the separation of cobalt and nickel, since the latter metal does not form a similar double nitrite, but it is necessary that the alkaline earth metals should be absent, for in their presence nickel forms complex nitrites containing the alkaline earth metal and the alkali metal.
This acid with silver nitrite gave nitroacetic acid, which readily gave the second nitromethane, CH a (NO 2) b H c H d, identical with the first nitromethane.
Ammonium nitrate and nitrite, for instance, intensify the action of a water on lead.Advertisement
Phenylnitromethane, C 6 H 5 CH 2 NO 2, isomeric with the nitrotoluenes, is prepared by the action of benzyl chloride on silver nitrite.
Strong or weak solutions of these substances also decompose it, producing some alkali nitrate and nitrite, the cellulose molecule being only partially restored, some quantity undergoing oxidation.
Ammonium hydroxide has no appreciable action at ordinary temperatures, but strong solutions of sodium or potassium hydroxides start a decomposition, with rise of temperature, in which some nitrate and always some nitrite is produced.
Alcoholic solutions of the alkalis also produce much nitrite along with some formate and acetate.
Although a nitrate, its pharmacological actions resemble those of nitrites such as amyl nitrite, taken internally.Advertisement
The explanation is that in an alkaline medium at body heat nitroglycerin yields a nitrite, probably as a preliminary stage of resolution.
Nitroglycerin shaken up with warm very dilute alkaline solutions, as sodium carbonate, for a few minutes only, always yields sufficient nitrite to give the diazoreaction; and, as stated, strong alkaline solutions always produce some nitrite as one of the decomposition products.
At a red heat it evolves oxygen with the formation of potassium nitrite, which, in turn, decomposes at a higher temperature.
Saltpetre may be made to act as a nitrite by dissolving it in water in the strength of about fifty grains to the ounce, soaking blotting-paper in the solution and letting the paper dry.
Caesium nitrate, CsNO 3, is obtained by dissolving the carbonate in nitric acid, and crystallizes in glittering prisms, which melt readily, and on heating evolve oxygen and leave a residue of caesium nitrite.Advertisement
Potassium osmiate, K 2 0sO 4 2H 2 0, formed when an alkaline solution of the tetroxide is decomposed by alcohol, or by potassium nitrite, crystallizes in red octahedra.
Ammonium nitrite, NH 4 NO 2, is formed by oxidizing ammonia with ozone or hydrogen peroxide; by precipitating barium or lead nitrites with ammonium sulphate, or silver nitrite with ammonium chloride.
Compounds are known which may be looked upon as derived from ammonia by the replacement of its hydrogen by the sulpho-group (HS0 3); thus potassium ammon-trisulphonate,N(SO 3 K) 3.2H20,is obtained as a crystalline precipitate on the addition of excess of potassium sulphite to a solution of potassium nitrite, KN02+3K2S03+2H20=N(S03K) 3 +4KHO.
For sodium nitrite see Nitrogen; for sodium nitrate see Saltpetre; for the cyanide see Prussic Acid; and for the borate see Borax.
For the nitrite, see Nitrogen, for the nitrate see Saltpetre and for the cyanide see Prussic Acid; for other salts see the articles wherein the corresponding acid receives treatment.Advertisement
Whatever were the means employed to rid air of accompanying oxygen, a uniform value of the density was arrived at, and this value was z% greater than that appertaining to nitrogen extracted from compounds such as nitrous oxide, ammonia and ammonium nitrite.
In the earlier stages of the inquiry, when it was important to meet the doubts which had been expressed as to the presence of the new gas in the atmosphere, blank experiments were executed in which air was replaced by nitrogen from ammonium nitrite.
Nitrite of amyl inhalations are useful in the early stages when the respiratory muscles are freely movable.
In this process the amine salt is dissolved in absolute alcohol and diazotized by the addition of amyl nitrite; a crystalline precipitate of the diazonium salt is formed on standing, or on the addition of a small quantity of ether.
Rubidium nitrate, RbNO 3, obtained by the action of nitric acid on the carbonate, crystallizes in needles or prisms and when strongly heated is transformed into a mixture of nitrite and oxide.Advertisement
It decomposes when heated to 900; with water it gives nitric oxide and cupric nitrate and nitrite.
As an example may be taken the use of nitrite of amyl in angina pectoris.
Nitrite of amyl has the power of dilating the arteries; it has consequently been employed with much success in lowering the blood pressure and removing the pain in angina pectoris.
For on the one hand knowledge of the fact that nitrite of amyl lessens blood pressure has led to the successful employment of other nitrites and bodies having a similar action, and on the other the knowledge that increased blood pressure tends to cause anginal pain leads to the prohibition of any strain, any food, any exposure to cold, and also of any medicines which would unduly raise the blood pressure.
Now we can see the reason for their administration, because the nitrous ether, consisting chiefly of ethyl nitrite, dilates the superficial vessels and thus allows greater escape of heat from the surface; while acetate of ammonia, by acting as a diaphoretic and stimulating the secretion of sweat, increases the loss of heat by evaporation.
When the latter have oxidized ammonia to nitrite, however, the former step in and oxidize it still further to nitric acid.
The alcohol is first acted upon with phosphorus and iodine, and the resulting alkyl iodide is treated with silver nitrite, which gives the corresponding nitroalkyl.
The nitro-alkyl is then treated with potassium nitrite dissolved in concentrated potash, and sulphuric acid is added.
The ' special ' biochemical adaptations used by bacteria that oxidize ammonia or nitrite.
Eggs, miscellaneous cereals and meat products contained the highest nitrite concentrations.
Patients with a positive leukocyte esterase or nitrite test were excluded until the urinary tract infection was treated.
Well, your doctor has nitrite and leucocyte esterase dipstick tests for night, weekend or emergency use.
A benchtop model was constructed reproducing the nitrite chemistry occurring within the lumen of the upper gastrointestinal tract where saliva encounters acidic gastric juice.
Other bacteria in a mature aquarium convert the nitrite to nitrate.
The ammonia produced by the fish is acted upon in mature water by the bacteria, which converts it to another compound called nitrite.
The first stage in nitrification is ammonia being converted to less toxic nitrite (NO 2 -) by Nitrosomonas sp.
The vapors from the amyl nitrite are inhaled through the nose or mouth.
In the absence of cells, isobutyl nitrite reacted with hydrogen peroxide to form peroxynitrite.
However, as street drugs, the alkyl nitrites (usually butyl nitrite) come in small bottles with screw or plug tops.
One of the most commonly used agents in the modern process is sodium nitrite.
The sodium or potassium nitrite solution is also cooled in the ice.
Background Nitrate and nitrite in food Most foods contain nitrate and nitrite in food Most foods contain nitrate and nitrite.
Hydroxyl radicals were produced by the photolysis of methyl nitrite in the presence of NO.
Initial results suggest a shift in nitrite reductase diversity under the L. perenne and fallow treatments.
It is now known that the action takes place in two stages; the ammonium salt is first oxidized to the nitrite stage and subsequently to the nitrate.
This readily gave with silver nitrite a nitromethane in which we may suppose the nitro-group to replace the a hydrogen atom, i.e.
Nitric acid (up to 50%) is formed in the first tower, and weaker acids in the successive ones; the last tower contains milk of lime which combines with the gases to form calcium nitrite and nitrate (this product, being unsuitable as a manure, is decomposed with the acid, and the evolved gases sent back).
Sandmeyer, Ber., 1887, 20, p. 1494) by the action of copper powder on the double salt formed by the addition of potassium mercuric nitrite to diazonium nitrites; and by the oxidation of primary aromatic amines (E.
The further oxidation of the nitrite to a nitrate is effected by bacteria belonging to the genus Nitrobacter.
Bamberger, Ber., 1893.26, p. 49 6); by the oxidation of nitrosobenzene (below) with atmospheric oxygen; or by the decomposition of benzene diazonium nitrate mercury nitrite, Hg(NO 2) 2.2C 6 H 5 N 2 NO 3, with copper powder (A.
Methemoglobin can accumulate in the blood as a result of nitrite poisoning.
Infants are especially susceptible to poisoning by nitrite.
It is rapidly converted to nitrite by the bacteria that live in the mouth as well as in the intestines and then absorbed into the bloodstream.
The amount of nitrite supplied by a typical diet is much lower, about 0.1 mg nitrite per day.
Poisoning by nitrite (or nitrate after its conversion to nitrite) results in the inability of hemoglobin to carry oxygen throughout the body.
Treatment of nitrite or nitrate toxicity involves inhalation of 100 percent oxygen for several hours.
This acid gives with silver nitrite the corresponding nitromalonic acid, which readily yielded the third nitromethane, CHaHb(N02),Hd, also identical with the first.
It is also prepared by the action of phosphorus pentachloride on potassium nitrite or on nitrogen peroxide.
It is readily decomposed by water and alkaline hydroxides, yielding a mixture of nitrite and chloride.