Hazards Analysis of Holston Ammonium Nitrate/Nitric Acid Storage and Transfer System

1974 ◽  
Author(s):  
W. L. Walker
Keyword(s):  
Nitric Acid ◽  
Ammonium Nitrate ◽  
Transfer System

The Chemical Behaviour and Deposition of Ammonium Nitrate, Nitric Acid and Ammonia

1997 ◽  
pp. 426-432
Author(s):  
Ralph Dlugi ◽  
Lucia Kins ◽  
Thomas Seiler ◽  
Winfried Seidl ◽  
Peter Seifert ◽  
...  
Keyword(s):  
Nitric Acid ◽  
Ammonium Nitrate ◽  
Chemical Behaviour

scholarly journals Aerodynamic gradient measurements of the NH<sub>3</sub>-HNO<sub>3</sub>-NH<sub>4</sub>NO<sub>3</sub> triad using a wet chemical instrument: an analysis of precision requirements and flux errors

2010 ◽  
Vol 3 (1) ◽  
pp. 187-208 ◽  
Author(s):  
V. Wolff ◽  
I. Trebs ◽  
C. Ammann ◽  
F. X. Meixner
Keyword(s):  
Nitric Acid ◽  
Ammonium Nitrate ◽  
Field Experiments ◽  
Phase Changes ◽  
Water Soluble ◽  
Individual Species ◽  
Measured Concentration ◽  
Surface Exchange ◽  
Concentration Difference ◽  
Wet Chemical

Abstract. The aerodynamic gradient method is widely used for flux measurements of ammonia, nitric acid, particulate ammonium nitrate (the NH3-HNO3-NH4NO3 triad) and other water-soluble reactive trace compounds. The surface exchange flux is derived from a measured concentration difference and micrometeorological quantities (turbulent exchange coefficient). The significance of the measured concentration difference is crucial for the significant determination of surface exchange fluxes. Additionally, measurements of surface exchange fluxes of ammonia, nitric acid and ammonium nitrate are often strongly affected by phase changes between gaseous and particulate compounds of the triad, which make measurements of the four individual species (NH3, HNO3, NH4+, NO3− necessary for a correct interpretation of the measured concentration differences. We present here a rigorous analysis of results obtained with a multi-component, wet-chemical instrument, able to simultaneously measure gradients of both gaseous and particulate trace substances. Basis for our analysis are two field experiments, conducted above contrasting ecosystems (grassland, forest). Precision requirements of the instrument as well as errors of concentration differences and micrometeorological exchange parameters have been estimated, which, in turn, allows the establishment of thorough error estimates of the derived fluxes of NH3, HNO3, NH4+, and NO3−. Derived median flux errors for the grassland and forest field experiments were: 39% and 50% (NH3), 31% and 38% (HNO3), 62% and 57% (NH4+), and 47% and 68% (NO3−), respectively. Additionally, we provide the basis for using field data to characterize the instrument performance, as well as subsequent quantification of surface exchange fluxes and underlying mechanistic processes under realistic ambient measurement conditions.

scholarly journals STUDIES ON RDX AND RELATED COMPOUNDS: IX. DETERMINATION OF NITRIC ACID AND ACETIC ANHYDRIDE IN BACHMANN LIQUORS

1953 ◽  
Vol 31 (3) ◽  
pp. 201-203
Author(s):  
R. H. Betts ◽  
R. S. Stuart ◽  
C. A. Winkler
Keyword(s):  
Nitric Acid ◽  
Acetic Anhydride ◽  
Ammonium Nitrate ◽  
Routine Analysis ◽  
Calcium Hypochlorite ◽  
Electrometric Method ◽  
Direct Titration ◽  
Related Compounds ◽  
External Indicator

An electrometric method for determination of nitric acid in RDX(B) liquors has been developed. The method is not largely affected by ammonium nitrate and acetic anhydride. A precision of ± 0.5% may be readily obtained. Acetic anhydride in RDX(B) liquors may be determined by direct titration with standard aniline–toluene solution at 0 °C., using calcium hypochlorite as an external indicator. In routine analysis, a precision of ± 2% may be obtained.

STUDIES ON RDX AND RELATED COMPOUNDS: IV. THE BACHMANN OR COMBINATION PROCESS

1951 ◽  
Vol 29 (8) ◽  
pp. 642-645 ◽  
Author(s):  
H. L. Williams ◽  
C. A. Winkler
Keyword(s):  
Nitric Acid ◽  
Ammonium Nitrate ◽  
Activation Energies ◽  
Combination Process ◽  
Related Compounds

The effect of varying the concentrations of nitric acid and ammonium nitrate on the yield of RDX has been determined at 35°C., using hexamine, hexamine mononitrate, and hexamine dinitrate. The activation energies for the formation of RDX from hexamine, hexamine mononitrate, and hexamine dinitrate were found to be approximately 11 kcal., 12.5 kcal., and 16.5 kcal., respectively.

scholarly journals Aerodynamic gradient measurements of the NH<sub>3</sub>-HNO<sub>3</sub>-NH<sub>4</sub>NO<sub>3</sub> triad using a wet chemical instrument: an analysis of precision requirements and flux errors

2009 ◽  
Vol 2 (5) ◽  
pp. 2423-2482 ◽  
Author(s):  
V. Wolff ◽  
I. Trebs ◽  
C. Ammann ◽  
F. X. Meixner
Keyword(s):  
Nitric Acid ◽  
Ammonium Nitrate ◽  
Field Experiments ◽  
Phase Changes ◽  
Water Soluble ◽  
Individual Species ◽  
Measured Concentration ◽  
Surface Exchange ◽  
Concentration Difference ◽  
Wet Chemical

Abstract. The aerodynamic gradient method is widely used for flux measurements of ammonia, nitric acid, particulate ammonium nitrate (the NH3-HNO3-NH4NO3 triad) and other water-soluble reactive trace compounds. The surface exchange flux is derived from a measured concentration difference and micrometeorological quantities (turbulent exchange coefficient). The significance of the measured concentration difference is crucial for the significant determination of surface exchange fluxes. Additionally, measurements of surface exchange fluxes of ammonia, nitric acid and ammonium nitrate are often strongly affected by phase changes between gaseous and particulate compounds of the triad, which make measurements of the four individual species (NH3, HNO3, NH4+, NO3–) necessary for a correct interpretation of the measured concentration differences. We present here a rigorous analysis of results obtained with a multi-component, wet-chemical instrument, able to simultaneously measure gradients of both gaseous and particulate trace substances. Basis for our analysis are two field experiments, conducted above contrasting ecosystems (grassland, forest). Precision requirements of the instrument as well as errors of concentration differences and micrometeorological exchange parameters have been estimated, which, in turn, allows the establishment of thorough error estimates of the derived fluxes of NH3, HNO3, NH4+, and NO3–. Derived median flux errors for the grassland and forest field experiments were: 39 and 50% (NH3), 31 and 38% (HNO3), 62 and 57% (NH4+), and 47 and 68% (NO3–), respectively. Additionally, we provide the basis for using field data to characterize the instrument performance, as well as subsequent quantification of surface exchange fluxes and underlying mechanistic processes under realistic ambient measurement conditions.

NITROLYSIS OF HEXAMETHYLENETETRAMINE: V. 1,7-DINITROXY-2,4,6-TRINITRO-2,4,6-TRIAZAHEPTANE AND RELATED COMPOUNDS

1949 ◽  
Vol 27b (6) ◽  
pp. 503-519 ◽  
Author(s):  
A. F. McKay ◽  
R. H. Meen ◽  
George F Wright ◽  
W. J. Chute ◽  
G. S. Myers
Keyword(s):  
Nitric Acid ◽  
Nitrogen Atom ◽  
Ammonium Nitrate ◽  
Cyclic Nitramines ◽  
Related Compounds

When hexamethylenetetramine is nitrolyzed with nitric acid and an anhydride in absence of ammonium nitrate the synthesis of cyclic nitramines is decreased and the yields of esterified linear tetramethylenetrinitramines are increased. The two remaining carbon atoms and one nitrogen atom in hexamine can be accounted as esterified dimethylolnitramide. The isolation of a trace of linear pentamethylenetetranitramine from a normal nitrolysis of hexamethylenetetramine shows that in all of these reactions a common intermediate, dimethylolaminomethyldinitrotriazacyclohexane, must be present. This has never been isolated, but its reactions can be deduced from the behavior of methylene-bis-3,5-dinitro-1,3,5-triazacyclohexane.

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