695041

Nitric acid

ACS reagent, ≥90.0%

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

Properties

• grade: ACS reagent
• Quality Level: 200
• 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 (SO₄^2-): ≤5 ppm
• cation traces: As: ≤0.3 ppm; Fe: ≤2 ppm; heavy metals (as Pb): ≤5 ppm
• 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 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.

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.

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: 5.1A - Strongly oxidizing hazardous materials
• WGK: WGK 2
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable
• Personal Protective Equipment: dust mask type N95 (US), Eyeshields, Gloves