The Quantitative Determination of the Reduction Products of Free Nitric Acid Solutions: namely-Nitrogen Peroxide, Nitric Oxide, Nitrous Oxide, Nitrogen, Nitrous Acid, and Salts of Hydroxyla-mine, Hydrazine and Ammonia

1924 ◽  
Vol 28 (6) ◽  
pp. 544-578 ◽  
Author(s):  
L. H. Milligan
Keyword(s):  
Nitric Oxide ◽  
Nitrous Oxide ◽  
Nitric Acid ◽  
Quantitative Determination ◽  
Nitrous Acid ◽  
Acid Solutions ◽  
Free Nitric Acid ◽  
Nitric Acid Solutions

The Effect of NO, HNO2 and HNO3 On Corrosion of Stainless Steel by H2SO4★

CORROSION ◽  
1958 ◽  
Vol 14 (1) ◽  
pp. 27-30
Author(s):  
W. P. McKINNELL ◽  
L. F. LOCKWOOD ◽  
R. SPEISER ◽  
F. H. BECK ◽  
M. G. FONTANA
Keyword(s):  
Nitric Oxide ◽  
Stainless Steel ◽  
Nitric Acid ◽  
Nitrous Acid ◽  
Acid Solutions ◽  
Active Type ◽  
Nitrate Ions ◽  
Nitric Acid Solutions ◽  
Spot Tests

Abstract Earlier work by other investigators has shown that nitrous acid is involved in the passivation of iron in concentrated nitric acid solutions. This paper describes the effect of nitric oxide, HNO2 and HNO3 on the corrosion of active Type 302 stainless steel by 10 percent H2SO4. Specimens of Type 302 stainless steel, activated by abrading on 240 grit emery cloth and exposed to 10 percent H2SO4 solutions, were passivated by bubbling nitric oxide through the solution. Bubbling oxygen through the solution did not passivate these abraded specimens. Abraded specimens exposed to an atmosphere of nitric oxide before immersion in nitric oxide-free H2SO4 remained active. Spot tests of 10 percent H2SO4 treated with nitric oxide revealed the presence of nitrite and nitrate ions in the solution. The addition of one part of 10 percent HNO3 to 60 parts of 10 percent H2SO4 was found to produce passivity of abraded stainless steel specimens exposed to the solution. 4.3.2

Oxidation of Urea with Nitrous Acid in Nitric Acid Solutions

2005 ◽  
Vol 47 (1) ◽  
pp. 58-62 ◽  
Author(s):  
K. N. Dvoeglazov ◽  
V. I. Marchenko
Keyword(s):  
Nitric Acid ◽  
Nitrous Acid ◽  
Acid Solutions ◽  
Nitric Acid Solutions
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