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306568

Sigma-Aldrich

Idrossido di potassio

semiconductor grade, pellets, 99.99% trace metals basis (Purity excludes sodium content.)

Sinonimo/i:

Soda caustica

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100 G
164,00 €
500 G
677,00 €

164,00 €

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100 G
164,00 €
500 G
677,00 €

About This Item

Formula condensata:
KOH
Numero CAS:
1310-58-3
Peso molecolare:
56.11
Numero CE:
215-181-3
Numero MDL:
MFCD00003553
Codice UNSPSC:
12352106
eCl@ss:
38100303
ID PubChem:
329753558
NACRES:
NA.21

164,00 €

Per informazioni sulla disponibilità, contatta il Servizio Clienti.
Richiedi un ordine bulk

Grado

semiconductor grade

Livello qualitativo

200

Tensione di vapore

1 mmHg ( 719 °C)

Saggio

99.99% trace metals basis (Purity excludes sodium content.)

Stato

pellets

Composizione

KOH, >85.0%

Impurezze

15% water

pH

~13.5 (25 °C, 5.6 g/L)

Punto di fusione

361 °C (lit.)

Cationi in tracce

Na: ≤500.0 ppm

Stringa SMILE

[OH-].[K+]

InChI

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

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Descrizione generale

Potassium hydroxide (KOH), also known as caustic potash. It is used as a significant precursor to many potassium containing products.

Applicazioni

In combination with tellurium powder, mediates the quantitative pinacolization of aromatic carbonyl compounds.[1]
Potassium hydroxide can be used:
  • As a base in the synthesis of imines, starting from amines and alcohols.
  • As a base in β-alkylation of secondary alcohols with primary alcohols without any transition metal catalyst.
  • In combination with aluminium for pinacolization of aromatic aldehydes and reduction of hindered ketones.
  • As a precipitating agent in the synthesis of MnZn ferrites nanoparticles (Mn0.8Zn0.2Fe2O4 ferrite nanoparticles) by modified hydrothermal method.

Pittogrammi

CorrosionExclamation mark
GHS05,GHS07

Avvertenze

Danger

Indicazioni di pericolo

H290,H302,H314

Classi di pericolo

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

Codice della classe di stoccaggio

8A - Combustible corrosive hazardous materials

Classe di pericolosità dell'acqua (WGK)

WGK 1

Punto d’infiammabilità (°F)

Not applicable

Punto d’infiammabilità (°C)

Not applicable

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Certificati d'analisi (COA)

Lot/Batch Number
MKCX4655
MKCW3339
MKCS8606
MKCR9566
MKCR5077

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Nature communications, 11(1), 4246-4246 (2020-08-28)
Water electrolysis offers a promising energy conversion and storage technology for mitigating the global energy and environmental crisis, but there still lack highly efficient and pH-universal electrocatalysts to boost the sluggish kinetics for both cathodic hydrogen evolution reaction (HER) and
Ian T McCrum et al.
The journal of physical chemistry. C, Nanomaterials and interfaces, 122(29), 16756-16764 (2018-09-28)
The effect of the alkali-metal cation (Li+, Na+, K+, and Cs+) on the non-Nernstian pH shift of the Pt(554) and Pt(533) step-associated voltammetric peak is elucidated over a wide pH window (1-13), through computation and experiment. In conjunction with our
Haochen Zhang et al.
Nature communications, 10(1), 3340-3340 (2019-07-28)
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Maria D Cabezas et al.
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Takahiro Naito et al.
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Hydrogen production from renewable energy and ubiquitous water has a potential to achieve sustainability, although current water electrolyzers cannot compete economically with the fossil fuel-based technology. Here, we evaluate water electrolysis at pH 7 that is milder than acidic and alkaline
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Domande

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

    1 risposta

    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

      Utile?

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

    1 risposta

    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

      Utile?

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