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237213

Sigma-Aldrich

Sodium nitrite

ACS reagent, ≥97.0%

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Linear Formula:
NaNO2
CAS Number:
Molecular Weight:
69.00
EC Number:
MDL number:
PubChem Substance ID:
NACRES:
NA.21

grade

ACS reagent

Quality Level

agency

suitable for EPA 300

assay

≥97.0%

form

powder or crystals

autoignition temp.

914 °F

impurities

≤0.01% insolubles

mp

271 °C (lit.)

anion traces

chloride (Cl-): ≤0.005%
sulfate (SO42-): ≤0.01%

cation traces

Ca: ≤0.01%
Fe: ≤0.001%
K: ≤0.005%
heavy metals (as Pb): ≤0.001%

SMILES string

[Na+].[O-]N=O

InChI

1S/HNO2.Na/c2-1-3;/h(H,2,3);/q;+1/p-1

InChI key

LPXPTNMVRIOKMN-UHFFFAOYSA-M

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This Item
S22525632181.06549
vibrant-m

237213

Sodium nitrite

Essential Grade
vibrant-m

S2252

Sodium nitrite

-
vibrant-m

563218

Sodium nitrite

-
vibrant-m

1.06549

Sodium nitrite

-
assay

≥97.0%

assay

≥99.0%

assay

99.999% trace metals basis

assay

≥99.0% (manganometric)

Quality Level

200

Quality Level

200

Quality Level

200

Quality Level

300

grade

ACS reagent

grade

-

grade

-

grade

ACS reagent

mp

271 °C (lit.)

mp

271 °C (lit.)

mp

271 °C (lit.)

mp

280 °C (decomposition)

anion traces

chloride (Cl-): ≤0.005%, sulfate (SO42-): ≤0.01%

anion traces

-

anion traces

-

anion traces

chloride (Cl-): ≤0.005%, sulfate (SO42-): ≤0.005%

General description

Sodium nitrite (NaNO2) is an inorganic compound that is commonly used as a reagent and catalyst in synthetic organic chemistry.

Application

Sodium nitrite can be used as a reagent in:      
  • The Sandmeyer reaction for converting amines into diazo derivatives, and nitration reaction.      
  • The oxidative C-C bond formation reaction in the presence of oxygen as the terminal oxidant.      
  • The oxidative carbonitration of alkenes in the presence of K2S2O8.

It can also be used as a nitrating agent in organic synthesis. For example, NaNO2 is used in direct C-H nitration, ipso-nitration, and nitration via transition metal-catalyzed cross-coupling reaction.

signalword

Danger

Hazard Classifications

Acute Tox. 3 Oral - Aquatic Acute 1 - Eye Irrit. 2 - Ox. Sol. 3

Storage Class

5.1B - Oxidizing hazardous materials

wgk_germany

WGK 3

flash_point_f

Not applicable

flash_point_c

Not applicable


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Sania Bibi et al.
Mikrochimica acta, 186(9), 595-595 (2019-08-04)
A cyclic voltammetric method is described for the determination of nitrite by using a multiwalled carbon nanotube paste electrode (MWCNT) that was modified with chitosan-functionalized silver nanoparticles (Chit-AgNPs). The AgNPs were prepared by one step procedure using chitosan as stabilizing
P J McClure et al.
International journal of food microbiology, 14(1), 77-91 (1991-10-01)
An automated turbidimetric system using multiwelled plates was used to examine the effects of different combinations of NaCl (0.5-8.0% w/v), NaNO2 (0-400 micrograms/ml) pH (4.6-7.4) and temperature (5-30 degrees C) on the growth of Listeria monocytogenes in tryptone soya broth.
Eagleson M.
Concise Encyclopedia Chemistry, 999-999 (1994)
R Kokkola et al.
Scandinavian journal of immunology, 61(1), 1-9 (2005-01-13)
Abstract High-mobility group box chromosomal protein 1 (HMGB1) is a protein with both intranuclear functions and extracellular cytokine-like effects. In this report, we study possible candidate receptors for HMGB1 on macrophages (Mphi) and define pathways activated by HMGB1 binding. Bone
Saurabh Srivastava et al.
Scientific reports, 8(1), 11326-11326 (2018-07-29)
Neuroinflammation is recognized as one of the obligatory pathogenic features of neurodegenerative diseases including Alzheimer's, Parkinson's or prion diseases. In prion diseases, space and time correlations between deposition of disease-associated, pathogenic form of the prion protein or PrPSc and microglial-mediated

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