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310484

Potassium nitrite

Name: Potassium nitrite
Brand: SIGALD

ACS reagent, ≥96.0%

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About This Item

Empirical Formula (Hill Notation):

KNO₂

CAS Number:

7758-09-0

Molecular Weight:

85.10

NACRES:

NB.24

PubChem Substance ID:

329753627

UNSPSC Code:

12352302

EC Number:

231-832-4

MDL number:

MFCD00011408

Assay:

≥96.0%

Grade:

ACS reagent

Form:

powder or crystals

Solubility:

water: soluble (718.8 g/l at 25 °C (77 °F))

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Properties

grade

ACS reagent

Quality Level

200

assay

≥96.0%

form

powder or crystals

impurities

≤0.01% insolubles

pH

7-10 (25 °C, 50 g/L)

mp

350 °C (dec.) (lit.)

solubility

water: soluble (718.8 g/l at 25 °C (77 °F))

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.