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484016 Sigma-Aldrich

Potassium hydroxide

reagent grade, 90%, flakes

Synonym: Caustic potash

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Properties

Related Categories Acids & Bases, Analytical Reagents, Analytical Reagents for General Use, Analytical/Chromatography, Bases,
Quality Level   100
grade   reagent grade
vapor pressure   1 mmHg ( 719 °C)
assay   90%
form   flakes
pH   ~13.5 (25 °C, 5.6 g/L)
mp   361 °C (lit.)
solubility   water: soluble 1120 g/L
SMILES string   [OH-].[K+]
InChI   1S/K.H2O/h;1H2/q+1;/p-1
InChI key   KWYUFKZDYYNOTN-UHFFFAOYSA-M

Description

General description

Potassium hydroxide (KOH) is a hygroscopic, water soluble base synthesized by the electrolysis of potassium chloride solution. It is the raw material for the synthesis of many potassium compounds. KOH reacts with CO2 to form potassium carbonate. This property can be utilized to absorb CO2. It participates as catalyst in aldol condensation reactions. KOH anisotropic etching of silicon is used for the fabrication of sub-micron silicon nitride waveguides using conventional contact lithography. Pulverized KOH may be used for the preparation of chalcones.

Application

Potassium hydroxide (KOH) was used in the following processes:
• Quantification of glutathione (GSH) and glutathione disulfide (GSSG) in biological samples by HPLC.
• Preparation of buffer for use in the Investigation of seed fatty acid (FA) composition, protein, oil and sugar content.
• Stable isotopic profiling study of Caenorhabditis elegans.
Potassium hydroxide may be employed as an etchant for the laser modified glass. In combination with tellurium powder, it mediates the quantitative pinacolization of aromatic carbonyl compounds.

Packaging

1 kg in poly bottle

10 kg in fiber drum

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
RIDADR 
UN 1813 8 / PGII
WGK Germany 
WGK 1
RTECS 
TT2100000
Flash Point(F) 
Not applicable
Flash Point(C) 
Not applicable

Documents

Certificate of Analysis (COA)

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Certificate of Origin (COO)

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Protocols & Articles

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Peer-Reviewed Papers
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References

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