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309079

Sigma-Aldrich

Nitric acid

red, fuming, HNO3 >90 %

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About This Item

Empirical Formula (Hill Notation):
HNO3
CAS Number:
7697-37-2
Molecular Weight:
63.01
MDL number:
MFCD00011349
UNSPSC Code:
12352106
PubChem Substance ID:
329753601
NACRES:
NA.21

vapor pressure

8 mmHg ( 20 °C)

Quality Level

100

Assay

5.0-10.0% (% N2O3, titration)

form

liquid

composition

HNO3, >90%

impurities

5-10% dissolved oxides as N2O3

color

red

pH

<1 (20 °C)

bp

120.5 °C (lit.)

density

1.48 g/mL at 20 °C (lit.)

storage temp.

2-8°C

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 an oxidizing agent used in the oxidation and nitration of organic molecules.

Application

Nitric acid can be used as:
  • A catalyst for the aerobic conversion of benzyl ethers to benzaldehydes.
  • An oxidant for the oxidative bromination of activated aromatic compounds using alkali metal bromide salts to synthesize corresponding bromo-derivatives.

Signal Word

Danger

Hazard Statements

H272,H290,H311,H314,H330

Hazard Classifications

Acute Tox. 2 Inhalation - Acute Tox. 3 Dermal - Eye Dam. 1 - Met. Corr. 1 - Ox. Liq. 2 - Skin Corr. 1

Supplementary Hazards

EUH071

Storage Class Code

5.1A - Strongly oxidizing hazardous materials

WGK

WGK 2

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Eagleson M.
Concise Encyclopedia Chemistry, 590-590 (1994)
Eduardo Carasek et al.
Talanta, 56(1), 185-191 (2008-10-31)
The need for highly reliable methods for the determination of trace elements has been recognised in analytical chemistry and environmental science. A method for the trace analysis of Pb and Cd in natural waters is described. In a preconcentration step
Oxidation of multiwalled carbon nanotubes by nitric acid.
Rosca ID, et al.
Carbon, 43(15), 3124-3131 (2005)
Eagleson M.
Concise Encyclopedia Chemistry, 698-698 (1994)
Heterogeneous reactivity of gaseous nitric acid on Al2O3, CaCO3, and atmospheric dust samples: A Knudsen cell study.
Hanisch F and Crowley JN.
The Journal of Physical Chemistry A, 105(13), 3096-3106 (2001)
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