Skip to Content
Merck
All Photos(3)

Key Documents

View All Documentation

310484

Sigma-Aldrich

Potassium nitrite

ACS reagent, ≥96.0%

Sign Into View Organizational & Contract Pricing
All Photos(3)

About This Item

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

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.)

anion traces

chloride (Cl-): ≤0.03%
sulfate (SO42-): ≤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

Looking for similar products? Visit Product Comparison Guide

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.

Signal Word

Danger

Hazard Statements

H272,H301,H400

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

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

Already Own This Product?

Find documentation for the products that you have recently purchased in the Document Library.

Visit the Document Library

On the crystal structure of the trigonal (and cubic) phase of potassium nitrite.
Solbakk JK and Str?mme KO.
Acta Chemica Scandinavica, 23(1), 20-20 (1969)
Ledgard J.
The Preparatory Manual of Explosives., 167-167 (2014)
The reaction of sodium or potassium nitrite with ruthenium salts.
Lederer M and Shukla SK.
Journal of Chromatography A, 6, 20-20 (1961)
Reactions of 4-nitrophthalic anhydride with potassium fluoride and potassium nitrite.
Markezich RL, et al.
The Journal of Organic Chemistry, 42(21), 3435-3436 (1977)
C Spagnuolo et al.
Biochimica et biophysica acta, 911(1), 59-65 (1987-01-05)
The oxidation reaction of human oxyhemoglobin with nitrite is complex and is characterized by a lag period followed by an autocatalytic phase. On the basis of contradictory experimental results, in order to describe the time-course of the reaction, two different
View All Related Papers

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Contact Technical Service