» » Nitric acid

Nitric acid


The pure nitric acid (HNO3) melted at -41.6 ° C produces a non-ferrous liquid, but its color ranges from yellow to brown to the temperature and the degree of light irradiation. Nitric acid in the sixteenth century for Separation of gold from silver was used. This substance is a mineral substance belonging to the group of acids. Nitric acid is used in the preparation of ammonium nitrate, as well as in agriculture, synthetic dyes, military industry, nitrate salts, pigment metallurgy and the printing industry.

The name of the substance (Persian language): nitric acid

The name of the substance (English): Nitric Acid

Brand (Farsi): Nitric Acid

Brand name: Nitric Acid

Other names: Nitric Acid, Hydrogen Nitrate

Production complexes: Shiraz Petrochemical Complex

Nitric acid from the sixteenth century was used to separate gold from silver. The nitric acid is obtained from dandruff by the effect of iron or alum sulfate on saltines in hot condition. This method of production shows that dandruff is pure. They combined a mixture of two materials, a bit of sand, lime, or broken pottery; they brought the material into a small glass container. These glasses were placed in a lime kiln that could contain two rows of these glasses, each with four rows of glass. They placed these glasses in the dust or ash on the neck, which allowed the heat to be dissipated and the glass was cracked. Tubes were removed from the vest, with the same amount of liquid glass attached to the outside of the furnace. All connections were carefully sealed. The first heat was mild to allow the raw material to dry in the glass, then heated every six hours to six hours, nitro gases were pulled out by salt crystallization water. Whenever the color of the product of distillation indicates that the decomposition was complete, the heat was gradually reduced.

In the production of agricultural ammonium nitrate and synthetic paints, military industry, nitrate salts, metallurgy pigments and printing industries

physical and chemical properties:

Molecular formula HNO3

Molar mass 63.012 g / mol

Appearance Clear, colorless liquid

Density 1.5129 g / cm3

Melting point -42 C, 231 K, -44 F

Boiling point 83 C, 356 K, 181 F (bp of pure acid, 68% solution boils at 120.5 C)

Solubility in water is completely miscible

Dipole moment: 2.17 0.02 D

Safety Information:

Causes severe eye burn, causing a brief irritation of the skin. Eating it causes severe pain and severe burns to the mouth and stomach. No fire and explosion hazard