Ammonia Ammonium salts

Reactions of ammonia and amines with carboxyUc acids result in the formation of a variety of products (47,48). Ammonium salts, RCOONH, are prepared with or without solvent, by reaction with anhydrous ammonia. Ammonium salts readily decompose to acid ammonium salts,... 

Whether nitrogen is in the reduced form (ammonia, ammonium salts, hydrazine) or the oxidised form (nitrites, nitrates), sodium gives rise to dangerous interactions. With the first set of compounds metalation occurs with formation of unstable or highly reducing compounds, whilst, with the second, redox reactions occur. 

Nitrogen NMR data have been obtained using both the low-abundance, spin = 1/2 N and the predominant spin = 1 N nuclei. Several different references have been used for nitrogen NMR including aqueous ammonia, ammonium salts, acetonitrile, nitric acid, and nitrates. Current opinion favors neat nitromethane, and the compilation of the known data for 1,4-oxazines (Table 6) is expressed with respect to this reference and arranged in order of the observed chemical shift. For the C-labeled compound 87, carbamate rotamers lead to two separate signals and the value of 7c n can be determined -283.98 (d, J 9) and -284.46 (d, 7 11) <2001JOC8010>. 

Ammino-orthoarsenates of composition Co3(As04)2(NH3).7H20, Co3(As04)2(NH3)2.6H20 and Co3(As04)2(NH3)3.5H20 have been obtained by the interaction in solution of a cobalt salt, arsenic acid or an arsenate and free ammonia, ammonium salts being present.7 The nature of the product depends on the amount of free ammonia present. 

Contact above 0°C of excess chlorine or a chlorinating agent with aqueous ammonia, ammonium salts or a compound containing a hydrolysable amino-derivative, or electrolysis of ammonium chloride solution produces the highly endothermic (AHf (g) +230.1 kJ/mol, 1.91 kJ/g) and explosive nitrogen trichloride as a water-insoluble yellow oil [1,2,3]. Detonation at constant volume generates 5,500 Bar maximum pressure and 2,100°C maximum temperature. As a vapour it decomposes explosively at pressures as low as 1 mBar and may sensitise flammable gas mixtures even as a... 

Suzuki, A., Motoyoshi, N., and Sagara, N. (1982). Effects of ammonia, ammonium salts, urea, and potassium salts on basidiospore germination in Coprinus cinereus and Coprinus phlyctidosporus. Trans. Mycol. Soc. Japan 23, 217-224. 

In flooded or waterlogged soils, as for example, in a continuously flooded rice paddy, anaerobic (reducing) conditions exist in the soil below the surface, and hence nitrification of ammoniacal nitrogen does not occur in this layer. Therefore, when ammonia, ammonium salts, or urea (which hydrolyzes in the soil to... 

F. Reaction of a-Hydroxy Carbonyl Compounds or Polyhydroxy Compounds with Ammonia, Ammonium Salts, or Formamide... 

TABLE II.4 PYRAZINES PREPARED FROM a-HYDROXY CARBONYL COMPOUNDS AND AMMONIA, AMMONIUM SALTS, OR FORMAMIDE... 

SIVES A Practical Treatise on the Manufacture, Properties, and Industrial Uses of Nitric Acid, Nitrates, Nitrites, Ammonia, Ammonium Salts, Cyanides, Cyanamide. etc., including Modern Explosives. By Gkoki-uky Martin, Ph.D., D.Sc., etc. and Wii.i.iam Barbour, M.A., B.Sc., F.I.C., etc. - - - Just Published. Net 7s. 6d. 

A Practical Treatise on the Manufacture, Properties, and Industrial Uses of Nitric Acid, Nitrates, Nitrites, Ammonia, Ammonium Salts, Cyanides, Cyanamide, Etc. Etc. 

Violent reaction with reducing agents, amines, ammonia, ammonium salts, combustible materials, oxidizable materials, sodium carbonate. Incompatible with sulfuric acid, caustics, alkanolamines, amides, organic anhydrides, isocyanates, vinyl acetate, alkylene oxides, epichlorohydrin. May increase the explosive sensitivity of nitromethane. 

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