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HCh nitric acid

HCh nitric acid

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Ukraine, Dnipro
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10 years on Allbiz
Technical characteristics
  • Country of manufactureUkraine
Description
HCh nitric acid
HNO3 nitric acid - one of the major industrial chemicals, colorless, transparent liquid with sharp, off-flavor.
Oxidizing properties.

Nitric acid - strong oxidizer. Dissolves all metals, except for gold, rhodium, platinum, niobium, tantalum, iridium and zirconium, turning them into oxides or nitrates. Easily oxidizes elemental sulfur to H2SO4 sulphuric acid and phosphorus to P2O5 phosphoric anhydride.

Character and reaction products with metals depend on concentration of nitric acid. Diluted acid is recovered mainly to NO nitrogen monoxide, recovery to N2O nitrous oxide
and molecular N2 nitrogen is in certain cases observed
.

The concentrated nitric acid passivates such metals as chrome, iron and aluminum, forming field-oxide film on their surface. Being easily soluble and to diluted acid, they gain stability in concentrated.
Application.
  • As raw materials for production of fertilizers: potash KNO3 saltpeter, NaNO3 sodium nitre, NH4NO3 ammonium nitrate, complex mineral fertilizers;
  • as nitrating agent in production of explosive substances (glycerol trinitrate, trinitrotoluene, hexogen and so forth);
  • as the oxidizing agent of two-component rocket fuels, for example, in mix with 1,1 dimethylhydrazine;
  • as reagent in nitrose way of sulphuric acid production;
  • for receiving nitrocellulose;
  • for receiving aromatic nitro compounds - precursors of the dyes, pharmacological preparations and other connections used in thin organic synthesis;
  • for pickling of metals and semi-conductor materials.
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