P1767

Sigma-Aldrich

Potassium hydroxide

≥85% KOH basis, pellets, white

Synonym(s):
Caustic potash
Linear Formula:
KOH
CAS Number:
Molecular Weight:
56.11
EC Number:
MDL number:
eCl@ss:
38100303
PubChem Substance ID:
NACRES:
NA.21

Quality Level

vapor pressure

1 mmHg ( 719 °C)

assay

≥85% KOH basis

form

pellets

impurities

≤2.0% K2CO3

color

white

pH

~13.5 (25 °C, 5.6 g/L)

mp

361 °C (lit.)

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, also known as caustic potash, is a water soluble strong base. The electron scattering in KOH has been investigated. Its infrared spectrum has been recorded and analyzed. The impact of surface functionalization of active carbons using KOH has been studied. Its role as a catalyst in the Michael addition reaction has been explored.

Application

Potassium hydroxide (KOH) has been used to prepare methanolic-KOH that is employed in a protocol for saponification of fruit extracts.
KOH has been used for adjusting pH during the preparation of the following:
  • Murashige and Skoog (MS) agar plates
  • MS liquid medium
  • MES ((2-(N-morpholino)-ethanesulfonic acid hydrate) solution
  • microtubule stabilizing buffer (MTSB)
  • 4% paraformaldehyde fixative (PFA)

Packaging

250, 500 g in poly bottle
2 kg in poly drum
1 kg in poly bottle

Pictograms

CorrosionExclamation mark

Signal Word

Danger

Hazard Statements

RIDADR

UN 1813 8 / PGII

WGK Germany

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Carotenoid Extraction and Quantification from Capsicum annuum.
Richins RD, et al.
Bio-protocol, e1256-e1256 (2014)
Vibrational spectrum of crystalline potassium hydroxide.
Snyder RG, et al.
J. Chem. Phys. , 33(4), 1171-1177 (1960)
Yohann Boutté et al.
Nature protocols, 6(4), 446-456 (2011-03-18)
Sterols are eukaryotic membrane components with crucial roles in diverse cellular processes. Elucidation of sterol function relies on development of tools for in situ sterol visualization. Here we describe protocols for in situ sterol localization in Arabidopsis thaliana root cells...
Michael addition catalyzed by potassium hydroxide under ultrasound.
Li JT, et al.
Synthetic Communications, 33(3), 353-359 (2003)
Potassium hydroxide modified active carbon for adsorptive refrigerators.
Buczek B and Wolak E.
Adsorption, 14(2-3), 283-287 (2008)
Protocols
This procedure may be used for all Catalase products.
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