The mechanism of the sulphamic acid — Nitric acid reaction

1977 ◽  
Vol 13 (1) ◽  
pp. 37-40 ◽  
Author(s):  
Martin N. Hughes ◽  
James R. Lusty
Keyword(s):  
Nitric Acid ◽  
Acid Reaction ◽  
Sulphamic Acid

Reaction of N-Acetyl-2,3-diphenylindole with Nitric Acid

1972 ◽  
Vol 50 (20) ◽  
pp. 3392-3396 ◽  
Author(s):  
Vinod Dave ◽  
E. W. Warnhoff
Keyword(s):  
Nitric Acid ◽  
Acid Reaction ◽  
Acid Catalyzed ◽  
Chemical Evidence

Based on spectroscopic and chemical evidence the 3-hydroxy-6-nitro-2,3-diphenylindolenine structure 8 is assigned to the previously reported N-acetyl-2,3-diphenylindole–nitric acid reaction product. The product from the acid-catalyzed rearrangement of 8 is assigned the oxindole structure 12.

A Peculiar Copper Ore from Coombing Cogoper Mine, Carcoar, New South Wales

1882 ◽  
Vol 5 (22) ◽  
pp. 32-33
Author(s):  
A. Liversidge
Keyword(s):  
Nitric Acid ◽  
Crystalline Structure ◽  
New South ◽  
New South Wales ◽  
Glass Tube ◽  
Copper Ore ◽  
South Wales ◽  
Acid Reaction ◽  
General Appearance

A dark-grey, almost black, copper bearing mineral, somewhat resembling Redruthite in general appearance, but of a duller lustre and considerably harder; the hardness being between 5 and 6. In parts a bronze tint and lustre is apparent. The specimen exhibits neither crystals nor crystalline structure, it breaks with a well marked couchoidal fracture. Lustre somewhat resinous; streak shining.Heated in a glass tube it gives off water, having a strongly marked acid reaction, from the sulphurous acid which is evolved. Before the blowpipe it does not fuse, colours the flame green, and acquires a dull black colour. Treated with strong boiling nitric acid it is rapidly acted upon, a bronze coloured residue being left, the residue when examined under the microscope presents a honey-combed appearance; the walls of the irregular cellular cavities are pale-brown and translucent and apparently composed of quartz; when the powdered mineral is boiled with nitric acid, a white residue of silica is left.

Initiation Temperature For Runaway Tri-n-butyl Phosphate/nitric Acid Reaction

2003 ◽  
Vol 38 (12-13) ◽  
pp. 2725-2739 ◽  
Author(s):  
Tracy S. Rudisill ◽  
William J. Crooks
Keyword(s):  
Nitric Acid ◽  
Acid Reaction

scholarly journals Conditions for the Development of Phase Components K2CaP2O7 , KCaP3O9 in Toxic Dust

2021 ◽  
Vol 24 (3) ◽  
pp. 38-44
Author(s):  
Anar K. Zhumadilova ◽  
Elmira B. Madaliyeva ◽  
Saule Z. Zhigitova
Keyword(s):  
Phase Composition ◽  
Nitric Acid ◽  
Nutrient Content ◽  
Generation Process ◽  
Elemental Phosphorus ◽  
Dust Generation ◽  
Yellow Phosphorus ◽  
Acid Reaction ◽  
Three Stages ◽  
Main Components

The present study analyses the composition and main components of toxic dust. To develop and understand the methods of controlling the dust generation process, it is necessary to study the data that provide detailed information about the reaction mechanism. The results of studies of the phase composition of dust conducted in the laboratory and their comparison with the data obtained earlier by other authors allowed establishing a fairly reliable diagnosis of the phase composition of dust. The analysis revealed that the dust of various phosphorus plants comprises the same basic components, yet the chemical bonds between them differ. The purpose of this study, conducted in the research laboratory of the Zhambyl Branch of LLP “Kazphosphate” (NDFZ) is to investigate the possibility of using new toxic dust, as well as the toxic dust from storage tanks to obtain NPK fertilisers. The study comprises three stages of investigating the oxidation of elementary phosphorus with nitric acid, since elementary yellow phosphorus is dangerous for the environment. As a result of the 1st stage of the study, it was found that toxic dust oxidised with nitric acid cannot be used as a fertiliser, since a non-technological mass is generated, such as acid resin, which is not suitable for drying and granulation. To neutralise the acid reaction mass, it was decided to use an aqueous solution of ammonia, thereby increasing the nutrient content and obtaining a complex NPK fertiliser. In the course of the study, the authors found in the 2nd and 3nd stages of the experiment that to obtain a productsuitable for fertilisation, it is necessary to strictly control the content of elemental phosphorus in the initial toxic dust and adjust the consumption of nitric acid based on its results

scholarly journals On the oxidation of ammonia in the human body, with some remarks on nitrification

1854 ◽  
Vol 6 ◽  
pp. 22-23
Keyword(s):  
Nitric Acid ◽  
Human Body ◽  
Royal Society ◽  
Great Increase ◽  
Unexpected Effect ◽  
Alkaline Reaction ◽  
Acid Reaction ◽  
Oxidation Of Ammonia

The author having shown, in a paper lately communicated to the Royal Society, that the effect of tartrate of ammonia on the acidity of the urine was totally different from that of tartrate of potash, and that carbonate of ammonia, taken in very large quantities, did not produce any alkaline reaction of the urine, but that, on the contrary, the acidity was rather increased than diminished by such doses, repeated the experiments with carbonate of ammonia, hoping to obtain more decided results. Although, from these experiments, it was again apparent that no diminution of the acid reaction resulted from taking carbonate of ammonia, yet the fact of any great increase in the acidity of the urine could not be determined. In his former paper, the author suggested that an inquiry into the occurrence of nitric acid in the urine would probably give the solution of this unexpected effect of carbonate of ammonia: and he was led to undertake the experiments described in the present paper with the view of detecting the presence of that acid under particular circumstances.

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