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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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