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Key Documents

695041

Sigma-Aldrich

Nitric acid

ACS reagent, ≥90.0%

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About This Item

Empirický vzorec (Hillův zápis):
HNO3
Číslo CAS:
Molekulová hmotnost:
63.01
EC Number:
MDL number:
UNSPSC Code:
12352209
eCl@ss:
38060304
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

vapor density

1.3 (vs air)

vapor pressure

6.6 mmHg ( 20 °C)
8 mmHg ( 20 °C)

description

dilution test passes test

assay

≥90.0%

form

liquid

ign. residue

≤0.002%

color

colorless to yellow

bp

120.5 °C (lit.)

density

1.48 g/mL at 20 °C (lit.)

anion traces

chloride (Cl-): ≤0.7 ppm
dissolved oxides: ≤0.1% (as N2O3)
sulfate (SO42-): ≤5 ppm

cation traces

As: ≤0.3 ppm
Fe: ≤2 ppm
heavy metals (as Pb): ≤5 ppm

SMILES string

O[N+]([O-])=O

InChI

1S/HNO3/c2-1(3)4/h(H,2,3,4)

Inchi Key

GRYLNZFGIOXLOG-UHFFFAOYSA-N

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General description

Nitric acid is generally used as a primary reagent for the nitration and oxidation of organic molecules. It is also used as a strong oxidizing agent in organic synthesis to perform oxidative transformations. In addition, nitric acid is also used in the manufacturing of intermediate for polyurethanes and polyamides production.

Application

Nitric acid is used:
  • As an oxidizing agent with sulfuric acid to graft the carboxylic acid over CNT (carbon nanotubes) to produce CNT-COOH.
  • In the combustion method to adjust the pH of the solution to 7. It is one of the steps in the preparation of mixed magnetite–hematite nanoparticles.
  • As a nitrating agent with sulfuric acid in the synthesis of 8-nitro-7-hydroxy-4-methyl coumarin and 6-nitro-7-hydroxy-4-methyl coumarin from 7-hydroxy-4-methyl coumarin.

signalword

Danger

Hazard Classifications

Acute Tox. 3 Inhalation - Eye Dam. 1 - Met. Corr. 1 - Ox. Liq. 3 - Skin Corr. 1A

supp_hazards

Storage Class

5.1A - Strongly oxidizing hazardous materials

wgk_germany

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter


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