310484

Potassium nitrite

ACS reagent, ≥96.0%

• Empirical Formula (Hill Notation): KNO₂
• CAS Number: 7758-09-0
• Molecular Weight: 85.10
• EC Number: 231-832-4
• MDL number: MFCD00011408
• UNSPSC Code: 12352302
• PubChem Substance ID: 329753627
• NACRES: NB.24

Properties

• grade: ACS reagent
• Assay: ≥96.0%
• form: powder or crystals
• impurities: ≤0.01% insolubles
• pH: 7-10 (25 °C, 50 g/L)
• mp: 350 °C (dec.) (lit.)
• anion traces: chloride (Cl^-): ≤0.03%; sulfate (SO₄^2-): ≤0.01%
• cation traces: Ca: ≤0.005%; Fe: ≤0.001%; Mg: ≤0.002%; Na: ≤0.5%; heavy metals (as Pb): ≤0.001%
• SMILES string: [K+].[O-]N=O
• InChI: 1S/K.HNO2/c;2-1-3/h;(H,2,3)/q+1;/p-1
• InChI key: BXNHTSHTPBPRFX-UHFFFAOYSA-M

Description

General description

Potassium nitrite is an ionic salt that can be used for a variety of chemical reactions, including configuration inversion, substitution of amines via disulfonylamides, nucleophilic aromatic nitration, diazotization, nitrosation, and nucleoside nitration.

Application

Potassium nitrite can be used as:

• A nucleophile for the nitrosation of diclofenac and diphenylamine into their corresponding N-nitroso derivatives.
• A nitrous acid source for the diazotization of arylamines.

Safety Information

• Pictograms: GHS03,GHS06,GHS09
• Signal Word: Danger
• Hazard Statements: H272,H301,H400
• Precautionary Statements: P210 - P220 - P264 - P273 - P280 - P301 + P310
• Hazard Classifications: Acute Tox. 3 Oral - Aquatic Acute 1 - Ox. Sol. 2
• Storage Class Code: 5.1B - Oxidizing hazardous materials
• WGK: WGK 2
• Flash Point(F): Not applicable
• Flash Point(C): Not applicable