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417661

Sigma-Aldrich

Potassium hydroxide solution

45 wt. % in H2O

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About This Item

Linear Formula:
KOH
CAS Number:
1310-58-3
Molecular Weight:
56.11
MDL number:
MFCD00003553
UNSPSC Code:
12352106
eCl@ss:
38100303
PubChem Substance ID:
329756152
NACRES:
NA.21

form

liquid

concentration

43.0-47.0 wt. % (KOH basis, by HCl, titration)
45 wt. % in H2O

density

1.456 g/mL at 25 °C

SMILES string

[K+].[O-][H]

InChI

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

InChI key

KWYUFKZDYYNOTN-UHFFFAOYSA-M

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General description

Potassium hydroxide (KOH) solution is a strong alkali widely used in chemical synthesis. Van Slyke apparatus and Hildebrand adsorption technique have been utilized to determine the solubility of oxygen in different concentration of KOH solution.

Application

Potassium hydroxide solution may be used in the following processes:
  • Depolymerization of poly(ethylene terephthalate) (PET) flakes.
  • Synthesis of potassium bicarbonate and potassium carbonate.
  • As an eluent in the nonsuppressor ion chromatography to separate and determine inorganic and organic anions.
  • Saponification of fruit seed oil to determine tocopherols and tocotrienols.

Pictograms

CorrosionExclamation mark
GHS05,GHS07

Signal Word

Danger

Hazard Statements

H290,H302,H314

Hazard Classifications

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

Storage Class Code

8B - Non-combustible corrosive hazardous materials

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Certificates of Analysis (COA)

Search for Certificates of Analysis (COA) by entering the products Lot/Batch Number. Lot and Batch Numbers can be found on a product’s label following the words ‘Lot’ or ‘Batch’.

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Nonsuppressor ion chromatography of inorganic and organic anions with potassium hydroxide as eluent.
Okada T and Kuwamoto T.
Analytical Chemistry, 55(7), 1001-1004 (1983)
The solubility and diffusion coefficient of oxygen in potassium hydroxide solutions.
Davis RE, et al.
Electrochimica Acta, 12(3), 287-297 (1967)
Native oils from apple, blackcurrant, raspberry, and strawberry seeds as a source of polyenoic fatty acids, tocochromanols, and phytosterols: a health implication.
Pieszka M, et al.
Journal of Chemistry, 2015 (2015)
Kinetics of depolymerization of poly (ethylene terephthalate) in a potassium hydroxide solution.
Wan BZ, et al.
Industrial & Engineering Chemistry Research, 40(2), 509-514 (2001)
Ledgard J.
The Preparatory Manual of Explosives., 79-79 (2007)
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