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P5958

Potassium hydroxide

Name: Potassium hydroxide
Brand: SIGALD

BioXtra, ≥85% KOH basis

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:

329820239

eCl@ss:

38100303

UNSPSC Code:

12352106

NACRES:

NA.21

EC Number:

215-181-3

MDL number:

MFCD00003553

Assay:

≥85% KOH basis

Form:

pellets

Solubility:

H₂O: 1 M, clear, colorless

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Properties

vapor pressure

1 mmHg ( 719 °C)

Quality Segment

200

product line

BioXtra

assay

≥85% KOH basis

form

pellets

impurities

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

pH

~13.5 (25 °C, 5.6 g/L)

mp

361 °C (lit.)

solubility

H₂O: 1 M, clear, colorless

anion traces

chloride (Cl^-): ≤0.01%, sulfate (SO₄^2-): ≤0.003%

cation traces

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%

SMILES string

[OH-].[K+]

InChI

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

InChI key

KWYUFKZDYYNOTN-UHFFFAOYSA-M

Description

General description

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.

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pictograms

GHS05,GHS07

signalword

Danger

hcodes

H290,H302,H314

pcodes

P234 - P260 - P280 - P301 + P312 - P303 + P361 + P353 - P305 + P351 + P338

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