Nitrogen oxides oxidizing agent

Only 20—40% of the HNO is converted ia the reactor to nitroparaffins. The remaining HNO produces mainly nitrogen oxides (and mainly NO) and acts primarily as an oxidising agent. Conversions of HNO to nitroparaffins are up to about 20% when methane is nitrated. Conversions are, however, often ia the 36—40% range for nitrations of propane and / -butane. These differences ia HNO conversions are explained by the types of C—H bonds ia the paraffins. Only primary C—H bonds exist ia methane and ethane. In propane and / -butane, both primary and secondary C—H bonds exist. Secondary C—H bonds are considerably weaker than primary C—H bonds. The kinetics of reaction 6 (a desired reaction for production of nitroparaffins) are hence considerably higher for both propane and / -butane as compared to methane and ethane. Experimental results also iadicate for propane nitration that more 2-nitropropane [79-46-9] is produced than 1-nitropropane [108-03-2]. Obviously the hydroxyl radical attacks the secondary bonds preferentially even though there are more primary bonds than secondary bonds. 

V-Alkylpipera ines and PIP can react with nitrosating agents such as nitrogen oxides, nitrites or nitrous acid to form nitrosamine derivatives (61,62). Piper a2ine dihydrochloride [142-64-3] reacts with aqueous sodium nitrite and HCl to give the dinitrosamine that melts at 156—158°C (61). 

Gaseous. True gases such as sulfur dioxide, nitrogen oxide, ozone, carbon monoxide, etc. vapors such as gasoline, paint solvent, diy cleaning agents, etc. 

Fire Hazards - Flash Point (deg. F) 168 OC Flammable Limits in Air (%) No data Fire Extinguishing Agents Alcohol foam, dry chemical, carbon dioxide Fire Extinguishing Agerus Not To Be Used Water may be ineffective Special Hazards of Combustion Products Toxic nitrogen oxides forni in fire situations Behavior in Fire No data Ignition Temperature No data Electrical Hazard No data Burning Rate 4.13 mm/min. 

There are well over 100 gaseous and aqueous phase reactions that can lead to acid formation and more than fifty oxidizing agents and catalysts may be involved. However, in the simplest terms sulfur in fuels is oxidized to SO2, and SO2 in the atmosphere is further oxidized and hydrolyzed to sulfuric acid. Most nitric acid is formed by the fixation of atmospheric nitrogen gas (N2) to NO. (NO and NO2) during high temperature combustion, followed by further oxidation and hydrolysis that produces nitric acid in the atmosphere. These materials can be dry-... 

The Cr2072- ion can act as an oxidizing agent in the solid state as well as in water solution. In particular, it can oxidize the NH ion to molecular nitrogen. When a pile of ammonium dichromate is ignited, a spectacular reaction occurs (Figure 20.12). 

Concentrated (16 M) nitric acid is a strong oxidizing agent the nitrate ion is reduced to nitrogen dioxide. This happens when 16 M HN03 reacts with copper metal (Figure 21.9) ... 

Natural products, synthesis of 829, 835, 837, 840-842, 948, 958 Nitrile oxides, reactions of 807 Nitriles - see also y-Ketonitriles reactions of 277 synthesis of 815 Nitrilimines, reactions of 277 Nitritosulphonium intermediates 206 Nitrogen compounds, as oxidizing agents 970-972... 

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