Sodium nitrogen trioxide

Nitrosyl chloride (178), nitrosyl chloride—hydrogen fluoride (NOF -3HF, NOF -6HF) (179), nitrous acid—hydrogen fluoride solutions (180,181), or nitrogen trioxide (prepared in situ from nitric oxide and oxygen) (27) can be used in place of sodium nitrite in the dia2oti2ation step. 

Nitrosyl chloride [55], nitrosyl fluoride-hydrogen fluoride liquid complexes (NOF3HF, NOF 6HF) [56], nitrous acid-hydrogen fluoride solutions [57, 5 ] nitrogen trioxide (prepared in situ from nitric oxide and oxygen) [59] and rert-butyl nitrite-hydrogen fluoride-pyndine [60] have been substituted for sodium nitrite in the diazotization step... 

Nitrogen Trioxide (N O ) especially useful for organic nitrosations and the in situ manufacture of nitrosyl sulfuric acid and sodium nitrite. Also used as an oxidizing agent. 

The nitrosations are usually carried out with conventional reagents. The most common procedures involve (a) sodium nitrite with acids in an aqueous system, (b) sodium nitrite in acetic anhydride, (c) nitrogen trioxide, (d) nitrosyl chloride in the presence of a base, and (e) dinitrogen tetroxide in the presence of a base. 

Nitrogen trioxide may be obtained by the acidification of an aqueous solution of sodium nitrite or by the reduction of nitric acid. 

Describe laboratory methods of preparing a) ammonia, b) nitrous oxide, c) nitric oxide, d) nitrogen trioxide, e) nitrogen dioxide, f) nitric acid, g) sodium nitrite, h) hydrazine, i) ammonium amalgam. 

No simultaneous addition techniques have been reported. The closest approximation is the substitution of gaseous nitrogen trioxide for sodium nitrite and acid. > This reagent has seen little... 

Dimethylsulfoxide Acyl and aryl halides, boron compounds, bromomethane, nitrogen dioxide, magnesium perchlorate, periodic acid, silver difluoride, sodium hydride, sulfur trioxide... 

Sulfamation is the formation (245) of a nitrogen sulfur(VI) bond by the reaction of an amine and sulfur trioxide, or one of the many adduct forms of SO. Heating an amine with sulfamic acid is an alternative method. A practical example of sulfamation is the artificial sweetener sodium cyclohexylsulfamate [139-05-9] produced from the reaction of cyclohexylamine and sulfur trioxide (246,247) (see Sweeteners). Sulfamic acid is prepared from urea and oleum (248). Whereas sulfamation is not gready used commercially, sulfamic acid has various appHcations (see SuLFAMiC ACID AND SULFAMATES) (249—253). 

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