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221295

Sigma-Aldrich

Potassium nitrate

ACS reagent, ≥99.0%

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About This Item

Fórmula empírica (notación de Hill):
KNO3
Número de CAS:
7757-79-1
Peso molecular:
101.10
Número CE:
231-818-8
Número MDL:
MFCD00011409
Código UNSPSC:
12352302
ID de la sustancia en PubChem:
329752256
NACRES:
NA.21
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grado

ACS reagent

Ensayo

≥99.0%

Formulario

crystals

impurezas

≤0.005% insolubles

pH

4.5-8.5 (25 °C, 5%)

mp

334 °C (lit.)

trazas de anión

chloride (Cl-): ≤0.002%
iodate (IO3-): ≤5 ppm
nitrite (NO2-): ≤0.001
phosphate (PO43-): ≤5 ppm
sulfate (SO42-): ≤0.003%

trazas de catión

Ca: ≤0.005%
Fe: ≤3 ppm
Mg: ≤0.002%
Na: ≤0.005%
heavy metals: ≤5 ppm (by ICP-OES)

cadena SMILES

[K+].[O-][N+]([O-])=O

InChI

1S/K.NO3/c;2-1(3)4/q+1;-1

Clave InChI

FGIUAXJPYTZDNR-UHFFFAOYSA-N

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Descripción general

Potassium nitrate is a water-soluble inorganic salt that is commonly used as nitrogen fertilizer.[1] It is also found in toothpastes[2] as a desensitizer for tooth hypersensitivity.[3] The addition of KNO3 to growth medium has shown to promote growth in salt stressed melon plants.[4]

Aplicación

Potassium nitrate may be used in the synthesis of 5-bromo-8-nitroisoquinoline via bromination of isoquinoline using N-bromosuccinimide.[5]

Pictogramas

Flame over circle
GHS03

Palabra de señalización

Warning

Frases de peligro

H272

Clasificaciones de peligro

Ox. Sol. 3

Código de clase de almacenamiento

5.1B - Oxidizing hazardous materials

Clase de riesgo para el agua (WGK)

WGK 1

Punto de inflamabilidad (°F)

Not applicable

Punto de inflamabilidad (°C)

Not applicable

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Certificados de análisis (COA)

Lot/Batch Number
MKCX5711
MKCX5717
MKCX5710
MKCX5712
MKCX5709

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Potassium nitrate toothpaste for dentine hypersensitivity
Poulsen S, et al.
Cochrane database of systematic reviews (Online), 2, D001476-D001476 (2001)
Response of vesicular-arbuscular endomycorrhizal sweetgum seedlings to three nitrogen fertilizers.
Brown RW, et al.
Forest Science, 27(2), 413-420 (1981)
Improved salt tolerance of melon (Cucumis melo L.) by the addition of proline and potassium nitrate.
Kaya C, et al.
Environmental and Experimental Botany, 60(3), 397-403 (2007)
Anika Schopf et al.
Bioelectrochemistry (Amsterdam, Netherlands), 109, 41-48 (2016-01-18)
Direct current (DC) stimulation can be used to influence the orientation and migratory behavior of cells and results in cellular electrotaxis. Experimental work on such phenomena commonly relies on electrochemical dissolution of silver:silver-chloride (Ag:AgCl) electrodes to provide the stimulation via
Synthesis of 5-Bromoisoquinoline and 5-Bromo-8-nitroisoquinoline.
Organic Syntheses, 98-104 (2005)
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Questions

1–2 of 2 Questions  

  1. How can I determine the shelf life / expiration / retest date of this product?

    1 answer

    1. If this product has an expiration or retest date, it will be shown on the Certificate of Analysis (COA, CofA). If there is no retest or expiration date listed on the product's COA, we do not have suitable stability data to determine a shelf life. For these products, the only date on the COA will be the release date; a retest, expiration, or use-by-date will not be displayed.
      For all products, we recommend handling per defined conditions as printed in our product literature and website product descriptions. We recommend that products should be routinely inspected by customers to ensure they perform as expected.
      For products without retest or expiration dates, our standard warranty of 1 year from the date of shipment is applicable.
      For more information, please refer to the Product Dating Information document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/449/386/product-dating-information-mk.pdf

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  2. How is shipping temperature determined? And how is it related to the product storage temperature?

    1 answer

    1. Products may be shipped at a different temperature than the recommended long-term storage temperature. If the product quality is sensitive to short-term exposure to conditions other than the recommended long-term storage, it will be shipped on wet or dry-ice. If the product quality is NOT affected by short-term exposure to conditions other than the recommended long-term storage, it will be shipped at ambient temperature. As shipping routes are configured for minimum transit times, shipping at ambient temperature helps control shipping costs for our customers. For more information, please refer to the Storage and Transport Conditions document: https://www.sigmaaldrich.com/deepweb/assets/sigmaaldrich/marketing/global/documents/316/622/storage-transport-conditions-mk.pdf

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