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438073

Sigma-Aldrich

Nitric acid

ACS reagent, 70%

Empirical Formula (Hill Notation):
HNO3
CAS Number:
Molecular Weight:
63.01
EC Number:
MDL number:
eCl@ss:
38060304
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

vapor pressure

8 mmHg ( 20 °C)

assay

68.0-70.0% (ACS specification)
70%

form

liquid

ign. residue

≤5 ppm

color

APHA: ≤10

pH

<1.0

bp

120.5 °C (lit.)

density

1.413 g/mL at 20 °C (lit.)

anion traces

chloride (Cl-): ≤0.5 ppm
sulfate (SO42-): ≤1 ppm

cation traces

As: ≤0.01 ppm
Fe: ≤0.2 ppm
heavy metals (as Pb): ≤0.2 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 (HNO3) is a highly corrosive mineral acid.[96][97] It is usually utilized for abstracting transition metal catalyst from single-walled carbon nanotubes (SWNTs) in order to purify them.[98] The effect of nitric acid on the oxidation of multiwalled carbon nanotubes (MWCNTs) has been investigated by sample weight, Raman spectrum, solubility, morphology and alignment examinations.[12]

Application

Nitric acid was used to increase the number of acid sites by altering the surface of activated carbon.[00]
It may be used:
  • In combination with acetic anhydride and zeolite catalysts for the preparation of p-nitrotoluene with high regioselectivity.
[01]
  • In the pretreatment of rice straw for enhanced production of xylose.
  • [02]
  • To minimize the extent of cation ordering in LiNi0.5Mn1.5O4, a transition metal-substituted spinel material, by surface treatment.
  • [03]

    Packaging

    2.2 L in poly bottle
    6×2.5 L in PVC-coated bottle

    Other Notes

    SKU-Pack sizes with -P are packaged in poly bottles

    Signal Word

    Danger

    Hazard Statements

    Hazard Classifications

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

    Supplementary Hazards

    Storage Class Code

    5.1B - Oxidizing hazardous materials

    WGK

    WGK 1

    Flash Point(F)

    Not applicable

    Flash Point(C)

    Not applicable

    Certificate of Analysis

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    Certificate of Origin

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