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P1767

Sigma-Aldrich

Potassium hydroxide

≥85% KOH basis, pellets, white

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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

vapor pressure

1 mmHg ( 719 °C)

Quality Level

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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This Item
P5958221473PX1480
Potassium hydroxide ≥85% KOH basis, pellets, white

Sigma-Aldrich

P1767

Potassium hydroxide

Potassium hydroxide BioXtra, ≥85% KOH basis

Sigma-Aldrich

P5958

Potassium hydroxide

Potassium hydroxide ACS reagent, ≥85%, pellets

Sigma-Aldrich

221473

Potassium hydroxide

Potassium hydroxide pellets, Meets ACS Specifications, Meets Reagent Specifications for testing USP/NF monographs GR ACS

Supelco

PX1480

Potassium hydroxide

assay

≥85% KOH basis

assay

≥85% KOH basis

assay

≥85%

assay

≥85.0%

form

pellets

form

pellets

form

pellets

form

pellets

impurities

≤2.0% K2CO3

impurities

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

impurities

≤0.001% N compounds, ≤2.0% K2CO3, 10-15% water

impurities

-

pH

~13.5 (25 °C, 5.6 g/L)

pH

~13.5 (25 °C, 5.6 g/L)

pH

~13.5 (25 °C, 5.6 g/L)

pH

14 (20 °C, 56 g/L in H2O)

mp

361 °C (lit.)

mp

361 °C (lit.)

mp

361 °C (lit.)

mp

361 °C (lit.)

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

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


Certificates of Analysis (COA)

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25G
Pack Size/Quantity

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705578-5MG-PW

PL860-CGA/SHF-1EA

MMYOMAG-74K-13

1000309185

enter as 1.000309185)

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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)
Michael addition catalyzed by potassium hydroxide under ultrasound.
Li JT, et al.
Synthetic Communications, 33(3), 353-359 (2003)
Electron impact study of potassium hydroxide.
Vuskovic L and Trajmar S.
J. Chem. Phys. , 71(9), 3887-3889 (1979)
Potassium hydroxide modified active carbon for adsorptive refrigerators.
Buczek B and Wolak E.
Adsorption, 14(2-3), 283-287 (2008)

Protocols

Enzymatic Assay of Catalase (EC 1.11.1.6)

This procedure may be used for all Catalase products.

Enzymatic Assay of Ficin (EC 3.4.22.3)

This procedure may be used for all Ficin products.

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