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221473

Sigma-Aldrich

Hidróxido de potasio

Potassium hydroxide

ACS reagent, ≥85%, pellets

Sinónimos:

Potasa cáustica

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About This Item

Fórmula lineal:
KOH
Número de CAS:
1310-58-3
Peso molecular:
56.11
Número CE:
215-181-3
Número MDL:
MFCD00003553
Código UNSPSC:
12352106
eCl@ss:
38100303
ID de la sustancia en PubChem:
329752271
NACRES:
NA.21
Ensayo:
≥85%
grado:
ACS reagent
Formulario:
pellets
En este momento no podemos mostrarle ni los precios ni la disponibilidad

grado

ACS reagent

Nivel de calidad

200

Agency

suitable for EPA 1621
suitable for EPA 1633

presión de vapor

1 mmHg ( 719 °C)

Ensayo

≥85%

Formulario

pellets

impurezas

≤0.001% N compounds
≤2.0% K2CO3
10-15% water

pH

~13.5 (25 °C, 5.6 g/L)

mp

361 °C (lit.)

trazas de anión

chloride (Cl-): ≤0.01%
phosphate (PO43-): ≤5 ppm
sulfate (SO42-): ≤0.003%

trazas de catión

Ca: ≤0.005%
Fe: ≤0.001%
Mg: ≤0.002%
Na: ≤0.05%
Ni: ≤0.001%
heavy metals: ≤0.001% (by ICP)

temp. de almacenamiento

room temp

cadena SMILES

[OH-].[K+]

InChI

1S/K.H2O/h;1H2/q+1;/p-1

Clave InChI

KWYUFKZDYYNOTN-UHFFFAOYSA-M

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Descripción general

Potassium hydroxide is an inorganic salt mainly used as a precursor to synthesize other potassium compounds such as potassium acetate,[1] potassium bicarbonate and potassium carbonate.[2] On a commercial scale, it is synthesized by the electrolysis of potassium chloride.[3]

Aplicación

Potassium hydroxide may be used in the following processes:
  • Conversion of nitriles to amide in tert-butanol.[4]
  • Cross-coupling of aryl halides with different sulfur-, oxygen- and nitrogen-based nucleophiles in dimethyl sulfoxide.[5]
  • As an activator for the preparation of activated carbons from corn cobs.[6]
  • As a base for the N-alkylation of nitrogen heterocycles in polyethylene glycol-ether solvents.[7]
  • Synthesis of (S)-1-(4-benzyl-2-thioxothiazolidin-3-yl)propan-1-one from (S)-phenylalaninol.[8]
  • To catalyze the polymerization of propylene oxide.[9]

Pictogramas

CorrosionExclamation mark
GHS05,GHS07

Palabra de señalización

Danger

Frases de peligro

H290,H302,H314

Clasificaciones de peligro

Acute Tox. 4 Oral - Eye Dam. 1 - Met. Corr. 1 - Skin Corr. 1A

Código de clase de almacenamiento

8A - Combustible corrosive 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
0000428364
0000428363
0000428363
0000428364
MKCX2263

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Ledgard J
The Preparatory Manual of Explosives., 79-79 (2009)
Preparation of high surface area activated carbon from corn by chemical activation using potassium hydroxide
Bagheri N & Abedi J
Chemical Engineering Research and Design, 87(8), 1059-1064 (2009)
Dimethyl Sulfoxide/Potassium Hydroxide: A Superbase for the Transition Metal-Free Preparation of Cross-Coupling Products
Yuan Y, et al
Advanced Synthesis & Catalysis, 352(17), 2892-2898 (2010)
N-Alkylation of pyrrole, indole, and several other nitrogen heterocycles using potassium hydroxide as a base in the presence of polyethylene glycols or their dialkyl ethers
Sukata K
Bulletin of the Chemical Society of Japan, 56(1), 280-284 (1983)
A study of the polymerization of propylene oxide catalyzed by anhydrous potassium hydroxide
Steiner EC, et al
Journal of the American Chemical Society, 86(21), 4678-4686 (1964)
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Questions

1–2 of 2 Questions  

  1. 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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  2. 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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