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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

Quality Level

grade

ACS reagent

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. It is usually utilized for abstracting transition metal catalyst from single-walled carbon nanotubes (SWNTs) in order to purify them. 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.

Application

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

Packaging

500, 6×500 mL in PVC-coated bottle
2.5, 6×2.5 L in PVC-coated bottle
100 mL in glass bottle
2.2 L in poly 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

Certificate of Origin

Chemical burn with nitric acid and xanthoproteic reaction.
Daniel A González-Padilla et al.
The Journal of emergency medicine, 48(4), e101-e102 (2014-12-10)
THE TREATMENT OF ACID AND ALKALI BURNS: AN EXPERIMENTAL STUDY.
E C Davidson
Annals of surgery, 85(4), 481-489 (1927-04-01)
Ilgook Kim et al.
Carbohydrate polymers, 99, 563-567 (2013-11-28)
In this study, nitric acid (HNO₃) was evaluated as an acid catalyst for rice straw pretreatment, and, after neutralization, as a sole nitrogen source for subsequent fermentation. Response surface methodology was used to obtain optimal pretreatment condition with respect to...
Stability of functionalized activated carbon in hot liquid water.
Van Pelt AH, et al.
Carbon, 77, 143-154 (2014)
Structurally stabilized LiNi0.5 Mn1.5O4 with enhanced electrochemical properties through nitric acid treatment.
Park JS, et al.
Journal of Power Sources, 230, 138-142 (2013)

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