221473
Sigma-Aldrich

Potassium hydroxide

Linear Formula:

KOH

Empform:

HKO

Synonyms English:

Caustic potash

Nacres: NA.21
Mdl No: MFCD00003553
Fw: 56.11
Pubchem Substance Id: 329752271
CAS Number: 1310-58-3
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Properties

Properties
anion traces chloride (Cl-): ≤
anti-clotting activity 0.01%
assay range
astm d 2162 85%
cavity diam. Ca: ≤
cavity diam. × d 0.005%
Description Potassium hydroxide ACS reagent, >=85%, pellets
frame l × w pellets
grain size ACS reagent
indiff. to chromic acid
inherent viscosity 0.001% N compounds
inlet and outlet diam. 1S/K.H2O/h
inlet and outlet nptm × nptm 1H2/q+1
inlet and outlet size /p-1
inlet cga KWYUFKZDYYNOTN-UHFFFAOYSA-M
MDM Code 221473-500G
Material Number 221473
Business Unit 778
Shipping Mode AP
CAS Number 1310-58-3

Description

Application

Potassium hydroxide may be used in the following processes:
  • Conversion of nitriles to amide in tert-butanol.
  • Cross-coupling of aryl halides with different sulfur-, oxygen- and nitrogen-based nucleophiles in dimethyl sulfoxide.
  • As an activator for the preparation of activated carbons from corn cobs.
  • As a base for the N-alkylation of nitrogen heterocycles in polyethylene glycol-ether solvents.
  • Synthesis of (S)-1-(4-benzyl-2-thioxothiazolidin-3-yl)propan-1-one from (S)-phenylalaninol.
  • To catalyze the polymerization of propylene oxide.

General description

Potassium hydroxide is an inorganic salt mainly used as a precursor to synthesize other potassium compounds such as potassium acetate, potassium bicarbonate and potassium carbonate. On a commercial scale, it is synthesized by the electrolysis of potassium chloride.

SAFETY INFORMATION

GHS05,GHS07

Signal Word

Danger

H290 - H302 - H314

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

RIDADRRIDADR

WGK Germany

WGK 1

Flash Point (F)

Not applicable

Flash Point (C)

Not applicable

Target Organs

Risk Statement

Supplemental Hazard Statements

DOCUMENTATION

Certificate of Analysis View Sample COA
Certificate of Origin

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