438073

Nitric acid

ACS reagent, 70%

• 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: 329756406
• NACRES: NA.21

Properties

• grade: ACS reagent
• Quality Level: 200
• 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 (SO₄^2-): ≤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

Description

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 LiNi_0.5Mn_1.5O₄, a transition metal-substituted spinel material, by surface treatment.

Other Notes

SKU-Pack sizes with -P are packaged in poly bottles

Safety Information

• 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: 5.1B - Oxidizing hazardous materials
• wgk_germany: WGK 1
• flash_point_f: Not applicable
• flash_point_c: Not applicable