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207810 Sigma-Aldrich

Potassium cyanide

ACS reagent, ≥96.0%

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Properties

Related Categories Essential Chemicals, Potassium Salts, Research Essentials, Salts
grade   ACS reagent
InChI Key   YUZRZFQHUCKACF-UHFFFAOYSA-N
assay   ≥96.0%
mp   634 °C (lit.)
solubility   water: soluble(lit.)
anion traces   S2-: ≤0.003%
  SCN-: passes test
  chloride (Cl-): ≤0.5%
  phosphate (PO43-): ≤0.005%
  sulfate (SO42-): ≤0.04%
cation traces   Fe: ≤0.03%
  Na: ≤0.5%
  Pb: ≤2 ppm

Description

General description

Potassium cyanide is a colorless hygroscopic compound. Its crystals exhibit cubic crystal system. It can be prepared by reacting hydrogen cyanide with potassium hydroxide. It participates in benzoin condensation reaction.

Application

Potassium cyanide may be employed in the following studies:
• As a reducing agent in the colorimetric determination of amino acids.
• Preparation of ferrocylacetonitrile, via reaction with methiodide of N,N-dimethylaminomethylferrocene.
• Synthesis of O-acetylcyanohydrins.
• Cyanation of aldimines via asymmetric Strecker-type reactions in the presence of chiral phase-transfer catalysts to form α-amino nitriles.
• Metal-catalyzed addition of cyanide to 1,2-epoxides to form β-hydroxy nitriles.

Packaging

2.5 kg in poly bottle

25, 500 g in poly bottle

Safety & Documentation

Safety Information

Signal word 
Danger
Target organs 
Missing Phrase - N11.00500180
Supplemental Hazard Statements 
Contact with acids liberates very toxic gas.
RIDADR 
UN 1680 6.1 / PGI
WGK Germany 
3
RTECS 
TS8750000

Documents

Certificate of Analysis

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Certificate of Origin

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Protocols & Articles
Peer-Reviewed Papers
15

References

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