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P5958

Sigma-Aldrich

Hydroxyde de potassium

BioXtra, ≥85% KOH basis

Synonyme(s) :

Potasse caustique

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About This Item

Formule linéaire :
KOH
Numéro CAS:
1310-58-3
Poids moléculaire :
56.11
Numéro CE :
215-181-3
Numéro MDL:
MFCD00003553
Code UNSPSC :
12352106
eCl@ss :
38100303
ID de substance PubChem :
329820239
Nomenclature NACRES :
NA.21

Pression de vapeur

1 mmHg ( 719 °C)

Niveau de qualité

200

Gamme de produits

BioXtra

Pureté

≥85% KOH basis

Forme

pellets

Impuretés

≤0.0005% Phosphorus (P)
≤0.1% Insoluble matter
≤2.0% K2CO3

pH

~13.5 (25 °C, 5.6 g/L)

Pf

361 °C (lit.)

Solubilité

H2O: 1 M, clear, colorless

Traces d'anions

chloride (Cl-): ≤0.01%
sulfate (SO42-): ≤0.003%

Traces de cations

Al: ≤0.0005%
Ca: ≤0.0005%
Cu: ≤0.0005%
Fe: ≤0.0005%
Mg: ≤0.0005%
NH4+: ≤0.05%
Na: ≤0.05%
Pb: ≤0.001%
Zn: ≤0.0005%

Chaîne SMILES 

[OH-].[K+]

InChI

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

Clé InChI

KWYUFKZDYYNOTN-UHFFFAOYSA-M

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Catégories apparentées

Description générale

Potassium hydroxide is an inorganic compound commonly known as caustic potash. It is a strong alkali, readily reacts with acids. It can be used in various reactions such as nucleophilic substitution, hydrolysis, and addition reactions. Sometimes it can also be used as a catalyst for aldol-type reactions.

Application

Potassium hydroxide can be used to adjust the pH of the solution.
It can also be used:
  • As a catalyst in the alkynylation of heteroaromatic N-oxides to synthesize corresponding C2-alkynylheterocycles.
  • As a superbase medium with dimethyl sulfoxide (KOH/DMSO medium) for the synthesis of cross-coupling products under transition metal-free conditions from reactions between aryl halides and various sulfur, oxygen and nitrogen-based nucleophiles.
  • In the synthesis and thermodynamic study of Na-based zeolites.

Pictogrammes

CorrosionExclamation mark
GHS05,GHS07

Mention d'avertissement

Danger

Mentions de danger

H290,H302,H314

Classification des risques

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

Code de la classe de stockage

8A - Combustible corrosive hazardous materials

Classe de danger pour l'eau (WGK)

WGK 1

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

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Iulia I Nita et al.
PloS one, 7(10), e46649-e46649 (2012-10-12)
Mitochondria mediate dual metabolic and Ca(2+) shuttling activities. While the former is required for Ca(2+) signalling linked to insulin secretion, the role of the latter in β cell function has not been well understood, primarily because the molecular identity of
Marija Smokvarska et al.
Current biology : CB, 30(23), 4654-4664 (2020-10-10)
In the course of their growth and development, plants have to constantly perceive and react to their environment. This is achieved in cells by the coordination of complex combinatorial signaling networks. However, how signal integration and specificity are achieved in
Jae Myoung Suh et al.
Nature, 513(7518), 436-439 (2014-07-22)
Fibroblast growth factor 1 (FGF1) is an autocrine/paracrine regulator whose binding to heparan sulphate proteoglycans effectively precludes its circulation. Although FGF1 is known as a mitogenic factor, FGF1 knockout mice develop insulin resistance when stressed by a high-fat diet, suggesting a
Guilhem Reyt et al.
Current biology : CB, 30(20), 4103-4111 (2020-08-29)
Casparian strips (CSs) are cell wall modifications of vascular plants restricting extracellular free diffusion into and out of the vascular system [1]. This barrier plays a critical role in controlling the acquisition of nutrients and water necessary for normal plant
K Y Foo et al.
Bioresource technology, 130, 696-702 (2013-01-22)
In this work, preparation of granular activated carbon from oil palm biodiesel solid residue, oil palm shell (PSAC) by microwave assisted KOH activation has been attempted. The physical and chemical properties of PSAC were characterized using scanning electron microscopy, volumetric
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