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Merck
CN

695041

Nitric acid

ACS reagent, ≥90.0%

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About This Item

Empirical Formula (Hill Notation):
HNO3
CAS Number:
7697-37-2
Molecular Weight:
63.01
PubChem Substance ID:
329761711
eCl@ss:
38060304
UNSPSC Code:
12352209
NACRES:
NA.21
EC Number:
231-714-2
MDL number:
MFCD00011349

Key Documents

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Product Name

Nitric acid, ACS reagent, ≥90.0%

InChI key

GRYLNZFGIOXLOG-UHFFFAOYSA-N

InChI

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

SMILES string

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

grade

ACS reagent

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

Quality Level

200

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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.

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.

signalword

Danger

Hazard Classifications

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

supp_hazards

EUH071

Storage Class

5.1A - Strongly oxidizing hazardous materials

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable

ppe

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

Regulatory Information

易制爆化学品
危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
MKCZ8794
MKCX4978
MKCX4976
MKCX0737
MKCT9792

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