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Nitric acid
Product Name: Nitric acid
Abbreviation: HNO3
Synonyms: HNO3
CAS:7697-37-2
Molecular formula: HNO3
Molecular weight:63.01
Einecs:231-714-2
Structural formula:
BRIEF DESCRIPTION
Nitric acid, also known as Nitric acid in English, is a monobasic inorganic strong acid with strong oxidizing and corrosive properties. It is one of the six major inorganic strong acids and is also an important chemical raw material. Its chemical formula is HNO3 and its molecular weight is 63.01. Its aqueous solution is commonly known as nitric acid water or ammonia nitrogen water. In industry, it can be used to make fertilizers, pesticides, explosives, dyes, etc. In organic chemistry, a mixture of concentrated nitric acid and concentrated sulfuric acid is an important nitrating agent. The hazard symbols are O (Oxidizing agent) and C (Corrosive). The anhydride of nitric acid is nitrogen pentoxide (N2O5).
TECHNICAL INDICATORS
| Analyze Project | Analysis | Requirement |
| Appearance | Appearance | Pure nitric acid is a colorless transparent liquid, while concentrated nitric acid is a light yellow liquid (containing nitrogen dioxide). Under normal circumstances, it is a colorless transparent liquid with a suffocating irritating odor. |
| density | Densities | 1.50g/cm 3 (anhydrous) |
| Vapor pressure | Vapor pressure | 23 mmHg (25°C) |
| purity(%) | Fineness | 67.3% |
USE
2.Used in the manufacture of nitro compounds such as tetranitromethane, nitrohexane, 1-nitropropane, and 2,4-dinitrophenoxyethanol.
3.Used in the synthesis of dye intermediates such as p-nitroanisole, 4,4'-dinitrodiphenyl ether, p-nitrophenol, and 2,5-dichloronitrobenzene.
4.Nitric acid can be used as a cleaning and rust removal agent for carbon steel and stainless steel equipment, and in the oxidation-reduction treatment of sewage and wastewater. In the biological treatment of sewage, it can be used as a nitrogen source for microbial nutrients.
5.Used in the manufacture of nitro lacquer and nitro enamel.
6.Used in the manufacture of nitroacetophenone.
7.Nitric acid is corrosive to most metals. High concentration nitric acid has a passivating effect on metals. It has good solubility for α-Fe2O3 and magnetic Fe3O4.
8.Nitric acid is used as an etchant and strong acid cleaning corrosive agent, and can be used in combination with glacial acetic acid, hydrogen peroxide, etc.
9.Nitric acid is used as an analytical reagent, such as a solvent and an oxidant. It is also used in organic synthesis to prepare various nitro compounds.
STORAGE CONDITIONS
1.Store in a cool, ventilated warehouse.
2.Keep away from fire and heat sources. The storage temperature should not exceed 30℃ and the relative humidity should not exceed 80%.
3.Keep container sealed.
4.It should be stored separately from reducing agents, alkalis, alcohols, alkali metals, etc. and should not be mixed.
5.The storage area should be equipped with leakage emergency treatment equipment and appropriate containment materials.
PACKAGE
2. Other forms of packaging can be provided according to customer needs.
CHEMICAL PROPERTIES
2.It is generally believed that nitric acid can be completely ionized in aqueous solution to produce a large number of hydrogen ions .
3.Nitric acid can react with alcohols to form corresponding nitrate esters. In terms of mechanism, the esterification reaction involving nitric acid was previously believed to produce carbon cation intermediates (many literatures describe it as Fischer esterification reaction). The esterification reaction of nitric acid is used to produce nitrocellulose.
4.Nitric acid can turn wool fabrics and animal tissues into bright yellow. Sulfur and phosphorus can be oxidized by nitric acid to produce sulfuric acid and phosphoric acid. It can dissolve a variety of metals to form nitrate solutions.
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