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757551

Sigma-Aldrich

Potassium hydroxide

anhydrous, ≥99.95% trace metals basis

Synonym(s):

Caustic potash

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About This Item

Linear Formula:
KOH
CAS Number:
Molecular Weight:
56.11
EC Number:
MDL number:
UNSPSC Code:
12352302
PubChem Substance ID:
NACRES:
NA.23

grade

anhydrous

Quality Level

vapor pressure

1 mmHg ( 719 °C)

Assay

≥99.95% trace metals basis

form

crystals or chunks
powder and chunks
powder or crystals

impurities

≤500.0 ppm Trace Metal Analysis

mp

361 °C (lit.)

solubility

H2O: soluble 1120 g/L

SMILES string

[OH-].[K+]

InChI

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

InChI key

KWYUFKZDYYNOTN-UHFFFAOYSA-M

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General description

Potassium hydroxide (KOH) is also known as caustic potash. It is a strong alkali or a solid base compound that can be used in a variety of industrial applications. It finds its usage in the production of soaps, cleaners and detergents.

Application

  • Biodiesel Production from Waste Cooking Oil: Describes the use of potassium hydroxide in biodiesel production, emphasizing its effectiveness in catalyzing the transesterification of waste cooking oil (K Komaladevi, R Pandithurai, 2023).
  • Chemical Activation for Dye Adsorption: Utilizes potassium hydroxide in the activation process to enhance the adsorption capacity of hemp-based activated carbon, crucial for environmental cleanup and management (Y Toptaş, B Yavuz, A Aksoğan Korkmaz, et al., 2024).
  • Surface Modification of Raphia Fibres: Highlights the use of potassium hydroxide for the chemical modification of Raphia fibres to improve their mechanical properties and water absorption, relevant in textile and material engineering (I Omemereyore, OT Uzoma, et al., 2024).
  • High-Performance Supercapacitors: Discusses the role of potassium hydroxide in enhancing the charge storage performance of electrodes, critical for the development of advanced energy storage systems (Y Pei, Z Ren, X Wu, et al., 2024).

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

Hazard Classifications

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

Storage Class Code

8A - Combustible corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable


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