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Merck

84378

Nitric acid

puriss. p.a., 65.0-67.0%

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About This Item

Empirical Formula (Hill Notation):
HNO3
CAS Number:
Molecular Weight:
63.01
PubChem Substance ID:
eCl@ss:
38060304
UNSPSC Code:
12352106
NACRES:
NA.21
EC Number:
231-714-2
MDL number:
Assay:
65.0-67.0%
Form:
liquid
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vapor pressure

8 mmHg ( 20 °C)

Quality Level

grade

puriss. p.a.

assay

65.0-67.0%

form

liquid

ign. residue

≤0.0005% (as SO4)

pH

<1.0

bp

120.5 °C (lit.)

density

1.37-1.41 g/mL at 20 °C (lit.)

anion traces

chloride (Cl-): ≤0.5 mg/kg, phosphate (PO43-): ≤0.5 mg/kg, sulfate (SO42-): ≤1 mg/kg

cation traces

Ag: ≤0.01 mg/kg, Al: ≤0.05 mg/kg, As: ≤0.01 mg/kg, Ba: ≤0.01 mg/kg, Bi: ≤0.1 mg/kg, Ca: ≤0.5 mg/kg, Cd: ≤0.01 mg/kg, Co: ≤0.01 mg/kg, Cr: ≤0.02 mg/kg, Cu: ≤0.01 mg/kg, Fe: ≤0.2 mg/kg, Hg: ≤0.005 mg/kg, K: ≤0.05 mg/kg, Li: ≤0.01 mg/kg, Mg: ≤0.1 mg/kg, Mn: ≤0.01 mg/kg, Mo: ≤0.02 mg/kg, Na: ≤0.5 mg/kg, Ni: ≤0.02 mg/kg, Pb: ≤0.01 mg/kg, Sr: ≤0.01 mg/kg, Tl: ≤0.05 mg/kg, Zn: ≤0.05 mg/kg

SMILES string

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

InChI

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

InChI key

GRYLNZFGIOXLOG-UHFFFAOYSA-N

General description

Nitric acid (HNO3) is a highly corrosive strong mineral acid. In HNO3, nitrogen element exhibits +5 oxidation state. 10%(v/v) nitric acid solution is useful for cleaning laboratory glasswares. Reaction of HNO3 with various original and synthetic mineral dust/mineral oxide surfaces was studied in a low-pressure Knudsen reactor operating at 298K.

Application

Used for the decomposition of organic and inorganic samples for det. of mercury
Nitric acid (HNO3) may be used in the following studies:
  • Oxidation of multiwalled carbon nanotubes (MWCNTs).
  • Removal of transition metal catalyst from the single-walled carbon nanotubes (SWNTs) during the purification of SWNTs.
  • Trace determinations of Pb and Cd in aqueous medium by flame atomic absorption spectrometry.
  • Preparation of lead dioxide (PbO2).


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Danger

Hazard Classifications

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

supp_hazards

Storage Class

5.1B - Oxidizing hazardous materials

wgk

WGK 2

flash_point_f

Not applicable

flash_point_c

Not applicable



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Eagleson M.
Concise Encyclopedia Chemistry, 698-698 (1994)
Eagleson M.
Concise Encyclopedia Chemistry, 590-590 (1994)
Nitric acid purification of single-walled carbon nanotubes.
Hu H, et al.
The Journal of Physical Chemistry B, 107(5), 13838-13842 (2003)