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Merck
CN

30603

Potassium hydroxide

pellets, reag. Ph. Eur., ≥85%

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:
329753544
eCl@ss:
38100303
UNSPSC Code:
12352106
NACRES:
NA.21
EC Number:
215-181-3
MDL number:
MFCD00003553
Assay:
≥85%
Form:
pellets
Solubility:
water: soluble ((1,130 g/l (68 °F / 20 °C))

Key Documents

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Product Name

Potassium hydroxide, pellets, reag. Ph. Eur., ≥85%

InChI key

KWYUFKZDYYNOTN-UHFFFAOYSA-M

InChI

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

SMILES string

[OH-].[K+]

agency

USP/NF
reag. Ph. Eur.

vapor pressure

1 mmHg ( 719 °C)

assay

≥85%

form

pellets

impurities

≤2.0% K2CO3

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))

anion traces

chloride (Cl-): ≤0.02%
phosphate (PO43-): ≤0.01%
sulfate (SO42-): ≤0.02%

cation traces

Al: ≤0.001%
Ca: ≤0.001%
Fe: ≤0.001%
Na: ≤1.0%
Ni: ≤0.0005%

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Application

Potassium hydroxide can be used as a base:
  • In the Pd-catalyzed Heck reaction of aryl halides with alkenes.
  • To synthesize β-alkylated alcohols via pincer-Ni catalyzed Guerbet reaction.
  • For the hydroxylation of aryl or heteroarylboronic acids to corresponding phenols.
It can also be used as a catalyst for the:
  • Transesterification of triglycerides to prepare biodiesels.
  • Synthesis of β-phenylethylamines via intermolecular addition of arylamines to styrenes.
  • Claisen-Schmidt condensation reaction to synthesize chalcones.

General description

Potassium hydroxide is a strong alkali that can be used in nucleophilic substitution reactions, addition reactions, and basic hydrolysis reactions. It can also be used to catalyze aldol-type reactions.

Packaging

This product is also available in glass bottles.

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 Information

危险化学品
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Certificates of Analysis (COA)

Lot/Batch Number
SDBB6208
STBL2293
STBK8583
STBJ3295
STBK6125

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Novel CuCl2-cryptand-[2.2. Benzo] complex: A base free and oxidant free catalyst for Ipso-Hydroxylation of aryl/heteroaryl-boronic acids in water at room temperature
Bora S, et al.
Journal of Organometallic Chemistry, 851, 52-56 (2017)
Potassium hydroxide catalyzed addition of arylamines to styrenes
Jaspers D, et al.
Synlett, 2011, 1444-1448 (2011)
Pincer-Nickel Catalyzed Selective Guerbet-Type Reactions
Arora V, et al.
Organometallics, 40, 2870-2880 (2021)
A Bronsted ammonium ionic liquid-KOH two-stage catalyst for biodiesel synthesis from crude palm oil
Man Z, et al.
Industrial Crops and Products, 144-149, 41-41 (2013)
Potassium Hydroxide
Ahmed F
e-EROS Encyclopedia of Reagents for Organic Synthesis (2001)
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