84378

Nitric acid

puriss. p.a., 65.0-67.0%

• Empirical Formula (Hill Notation): HNO₃
• CAS Number: 7697-37-2
• Molecular Weight: 63.01
• EC Number: 231-714-2
• MDL number: MFCD00011349
• UNSPSC Code: 12352106
• eCl@ss: 38060304
• PubChem Substance ID: 329769296
• NACRES: NA.21

Properties

• vapor pressure: 8 mmHg ( 20 °C)
• 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 (PO₄^3-): ≤0.5 mg/kg; sulfate (SO₄^2-): ≤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

Description

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

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).

Used for the decomposition of organic and inorganic samples for det. of mercury

Safety Information

• Pictograms: GHS03,GHS06,GHS05
• Signal Word: Danger
• Hazard Statements: H272,H290,H314,H331
• Precautionary Statements: P210 - P220 - P280 - P303 + P361 + P353 - P304 + P340 + P310 - P305 + P351 + P338
• Hazard Classifications: Acute Tox. 3 Inhalation - Eye Dam. 1 - Met. Corr. 1 - Ox. Liq. 3 - Skin Corr. 1A
• Supplementary Hazards: EUH071
• Storage Class Code: 5.1B - Oxidizing hazardous materials
• WGK: WGK 2
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable