Nitrogen peroxid

Fl Jmxyf,unini- 7803-49-8 2500 Nitrogen Tetroxide (also called Nitrogen Peroxide) IIIM4 7 - ... 

Den Hertog and Overhoff - observed that when pyridine in sulfuric acid is added to molten potassium sodium nitrate the 3-nitro derivative is formed at 300°C, whereas at 450°C 2-nitropyridme is the main product. The latter is probably a free-radical process. Schorigin and Toptschiew obtained 7-nitroquinoline by the action of nitrogen peroxide on quinoline at 100°C, possibly through the homolytic addition of NOa. Laville and Waters reported that during the decomposition of pernitrous acid in aqueous acetic acid, quinoline is nitrated in the 6- and 7-positions. They considered that the reaction proceeds as shown in Scheme 3. 

Untersalpetersaure, /. hyponitric acid (old name for nitrogen peroxide). 

If J, are the free energies of a system before and after dissociation at a constant temperature, the maximum external work obtainable is — 4/ This may be calculated directly. Let us take the case of nitrogen peroxide ... 

Nitrocopper. Cu2N02. A compd corresponding to this formula was prepd in 1892 by the action of nitrogen peroxide (N204) on cuprous oxide at room temp. Up to 30% by wt of Cu20 reacted without change of appearance of the solid compd. When heated in the absence of air, the... 

Nitrogen Peroxide. Same as Nitrogen Dioxide see under Nitrogen Oxides in this Voi... 

Nitrogen Peroxide Oxycellulose was obtained by Eastman Kodak Co (Ref 3) by the action of N02 gas (0 6 to 0.9p) on cellulose at 20°, or below, for 50 hours. It is claimed that oxidation of the terminal carbon took place. This oxycellulose is sol in 2% NaOH... 

It was first prepd by Milone Massa (Ref 2) by nitrating phenyldinitromethane with strong nitric acid (a i.52g/cc). Fieser et al (Ref 3) prepd it using two methods a) nitration of phenyldinitromethane and b) by direct synthesis using the Ponzio reaction in which an ethereal soln of m-nitrobenzaldoxime is added dropwise and under reflux to an ethereal soln of nitrogen peroxide ... 

Pollard s Test for Stability of Propellants. This test, proposed in 1924—25, is based upon the action of nitric peroxide on colloidal Ag oxide Procedure. A current of air is passed over a sample of proplnt in storage into a colloidal soln of Ag oxide. If free nitrogen peroxide is present, it reacts with the colloid and decreases the amt of light diffused by it. The larger the decrease, the higher the amt of N02 present, and the more decompd is the proplnt Ref Reilly (1938), 80... 

Poison, Class A A D.O.T. term for extremely dangerous poisons such as poisonous gases or liquids of such a nature that a very small amount of the gas or vapor of the liquid mixed with air is dangerous to life. Examples include phosgene, cyanogen, hydrocyanic acid, and nitrogen peroxide. 

Nitrogen oxides (NO ), 2 789, 796-797 23 180 27 270. See also Nitric oxide (NO) Nitrogen dioxide (NO2) Nitrogen pentoxide Nitrogen peroxide Nitrogen tetroxide Nitrous oxide (N20) NO entries... 

Especial care is required when working with the following much used substances hydrocyanic add, phosgene, dimethyl sulphate, the lower add chlorides, chlorine, bromine, nitric oxide and nitrogen peroxide, carbon monoxide, sodium, and potassium. Large scale operations with these should be carried out in a special room in any case always in a good fume chamber. 

When the crystal structure is destroyed by fusion or dissolution, a dissociation into single coloured molecules occurs to an extent which increases with the temperature. This behaviour is exactly similar to that so well known in the case of nitrogen peroxide ... 

The ease with which the phenols are nitrated has already been discussed. The process is not satisfactory, however, even when dilute nitric acid is used, because resinous by-products are formed as a result of oxidation and condensation. Nitration with nitrogen peroxide in non-aqueous solvents such as benzene and petrol ether gives better results (Ber., 1921, 54, 1776). 

This compound is surprisingly similar to N02, not only in colour, but also in many reactions. It, however, lacks all tendency to lose the radicle state and to dimerise like nitrogen peroxide. In this respect it resembles nitric oxide, whereas the organic relatives of nitric oxide are more like nitrogen peroxide. 

McDowell, C. A., and Thomas, J. H., Oxidation of Aldehydes in the Gaseous Phase Part IV. The Mechanism of the Inhibition of the Gaseous Phase Oxidation of Acetaldehyde by Nitrogen Peroxide, Transactions of the Faraday Society, Vol. 46, No. 336, 1950, pp. 1030-1039. 

Formula NO2 MW 46.0055 dimerizes to dinitrogen tetroxide, N2O4 Synonym nitrogen peroxide... 

NITROGEN TETROXIDE Nitrogen peroxide, Nitrogen dioxide Red oxide of nitrogen, Oxides of nitrogen Poisonous Gas or Liquid, Class A 3 0 0 oxy... 

Fluorine at ordinary temp, is a greenish-yellow gas when viewed in layers a metre thick the colour is paler and more yellow than that of chlorine. The liquid gas is canary-yellow the solid is pale yellow or white. Moissan s gas has an intensely irritating smell said to recall the odour of hypochlorous acid or of nitrogen peroxide. Even a small trace of gas in the atm. acts quickly on the eyes and the mucous membranes and, in contact with the skin, it causes severe burns, and rapidly destroys the tissues. If but a slight amount is present, its smell is not... 

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