695041

Ácido nítrico

ACS reagent, ≥90.0%

• Fórmula empírica (notación de Hill): HNO₃
• Número de CAS: 7697-37-2
• Peso molecular: 63.01
• EC Number: 231-714-2
• MDL number: MFCD00011349
• UNSPSC Code: 12352209
• eCl@ss: 38060304
• PubChem Substance ID: 329761711
• NACRES: NA.21

Propiedades

• 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

Descripción

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.

Información de seguridad

• pictograms: GHS03,GHS06,GHS05
• signalword: Danger
• hcodes: H272,H290,H314,H331
• pcodes: 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
• supp_hazards: EUH071
• Storage Class: 5.1A - Strongly oxidizing hazardous materials
• wgk_germany: WGK 2
• flash_point_f: Not applicable
• flash_point_c: Not applicable
• ppe: Faceshields, Gloves, Goggles, type ABEK (EN14387) respirator filter