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Nitric Acid

Nitric Acid
Nitric Acid
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Product Code : 223
Product Description

Chemistry of Nitric Acid
Nitric acid is a strong acid with a pKa of −2: in aqueous solution, it completely ionizes into the nitrate ion NO3− and a hydrated proton, known as a hydronium ion, H3O+. Nitric Acid is a monoprotic acid because there is only one dissociation. The salts of nitric acid (which contain the nitrate ion) are also known as nitrates. The overwhelming majority of them are very soluble in water and in other polar liquid substances, such as ethanol.
At room temperature nitric acid gives off red or yellow fumes.
Nitric acid and its salts, the nitrates, should not be confused with nitrous acid and its salts, the nitrites.




HNO3 Concentration


61.5 +- 0.5% by wt. min., 68%, 72%


Nitrous Oxide as HNO2


500 ppm max.


Chloride as Cl


10 ppm max.


Sulphate as H2SO4


50 ppm max.


Arsenic as As


2 ppm max.


Residue as Ignition


100 ppm max.


Heavy Metal as Pb


To pass the test


Specific Gravity


1.368 ar 25 deg C


Flash Point


(-) 19 deg C

Widely used in the manufacture of Ammonium Nitrate and other explosives, Sodium Nitrate, Potassion Nitrate, Calcium Nitrate, Glyoxal, H-Acid, Nitrobenzene and other Nitro Derivatives, Dyes and Dye Intermediates, Drugs and Pharmaceuticals, Pickling of Steel and Metallurgy, Acrylic Fibre etc.



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