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Merck

P1767

Potassium hydroxide

≥85% KOH basis, pellets, white

Synonym(s):

Caustic potash

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About This Item

Linear Formula:
KOH
CAS Number:
1310-58-3
Molecular Weight:
56.11
PubChem Substance ID:
329820107
eCl@ss:
38100303
UNSPSC Code:
12352106
NACRES:
NA.21
EC Number:
215-181-3
MDL number:
MFCD00003553
Assay:
≥85% KOH basis
Form:
pellets
Solubility:
water: soluble ((1,130 g/l (68 °F / 20 °C))

Key Documents

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InChI key

KWYUFKZDYYNOTN-UHFFFAOYSA-M

InChI

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

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.)

Quality Level

200

solubility

water: soluble ((1,130 g/l (68 °F / 20 °C))

SMILES string

[OH-].[K+]

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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)

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

Hazard Classifications

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

Storage Class

8A - Combustible corrosive hazardous materials

wgk

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

Regulatory Listings

Regulatory Listings are mainly provided for chemical products. Only limited information can be provided here for non-chemical products. No entry means none of the components are listed. It is the user’s obligation to ensure the safe and legal use of the product.

Substances Subject to be Indicated Names

ishl_indicated

Substances Subject to be Notified Names

ishl_notified

P1767-500G:4548173205458 + P1767-250G:4548173205434 + P1767-2KG:4548173205441 + 2016125: + 2540070: + P1767-BULK: + P1767-VAR: + P1767-1KG:4548173205427

jan

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Michael addition catalyzed by potassium hydroxide under ultrasound.
Li JT, et al.
Synthetic Communications, 33(3), 353-359 (2003)
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
Vibrational spectrum of crystalline potassium hydroxide.
Snyder RG, et al.
J. Chem. Phys., 33(4), 1171-1177 (1960)
Carotenoid Extraction and Quantification from Capsicum annuum.
Richins RD, et al.
Bio-protocol, e1256-e1256 (2014)
Potassium hydroxide modified active carbon for adsorptive refrigerators.
Buczek B and Wolak E.
Adsorption, 14(2-3), 283-287 (2008)
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