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12654

Sigma-Aldrich

Potassium nitrite

meets analytical specification of FCC, 97-100.5%

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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:
329749790
NACRES:
NA.21

Assay

97-100.5%

form

crystals

quality

meets analytical specification of FCC

impurities

≤0.001% heavy metals (as Pb)

mp

350 °C (dec.) (lit.)

solubility

water: soluble 0.35 part
alcohol: slightly soluble

anion traces

chloride (Cl-): ≤100 mg/kg
sulfate (SO42-): ≤200 mg/kg

cation traces

As: ≤1 mg/kg
Fe: ≤10 mg/kg
Pb: ≤4 mg/kg

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

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Application

Potassium nitrite has been used for determining the bacteriostatic and fungistatic activity of acidified nitrite. It has also been used as a supplement in buffer for investigating the impact of nitrite on nosocomial pathogens including C. difficile spores. Adulterants such as “Klear” and “Whizzies” contain potassium nitrite which masks tests for abused drugs in urine. Hence potassium nitrite is used along with Klear and Urine Luck for preparing adulterated urine for drug-of-abuse testing.

Biochem/physiol Actions

Potassium nitrite is a strong oxidizing agent that enhances seeds to germinate without a pre-incubation period and without ethylene.

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)

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Agam Rao et al.
Antimicrobial agents and chemotherapy, 50(11), 3901-3904 (2006-10-27)
Exposure to pH 1 or 2 buffers or acidic gastric contents resulted in the killing of vancomycin-resistant Enterococcus sp., Klebsiella pneumoniae, Staphylococcus aureus, and Candida glabrata but not Clostridium difficile spores. Nitrite enhanced killing under acidic conditions, but significant killing
R Weller et al.
Journal of applied microbiology, 90(4), 648-652 (2001-04-20)
Nitric oxide is generated from sweat nitrite in the acidic environment of the skin surface and is thought to contribute to protection against infection. This study examined the sensitivity of Trichophyton mentagrophytes, T. rubrum, Candida albicans, Streptococcus pyogenes, Staphylococcus aureus
Ethylene, Nitrate and Nitrite Interactions in the Promotion of Dark Germination of Common Purslane Seeds.
<BIG>G. H. Egley</BIG>
Annals of Botany, 53, 833-840 (1984)
W Vleeming et al.
Food and chemical toxicology : an international journal published for the British Industrial Biological Research Association, 35(6), 615-619 (1997-06-01)
The effect of nitrite on blood pressure and heart rate was studied in anaesthetized (non-telemetric method) and free-moving rats (biotelemetry system). In anaesthetized rats, NaNO2 (10-1000 mumol/kg), infused over 5 min, induced a dose-related decrease in blood pressure. The maximal
Tessa L Broder et al.
The journal of physical chemistry. B, 111(27), 7778-7785 (2007-06-19)
The electrochemical oxidation of potassium nitrite has been studied in the room temperature ionic liquid (RTIL) [C2mim][NTf2] by cyclic voltammetry at platinum electrodes. A chemically irreversible oxidation peak was observed, and a solubility of 7.5(+/-0.5) mM and diffusion coefficient of
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