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207810 Sigma-Aldrich

Potassium cyanide

ACS reagent, ≥96.0%

  • CAS Number 151-50-8

  • Linear Formula KCN

  • Molecular Weight 65.12

  •  Beilstein/REAXYS Number 3593645

  •  EC Number 205-792-3

  •  MDL number MFCD00011397

  •  PubChem Substance ID 329752024

  •  NACRES NA.21

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Properties

Related Categories Essential Chemicals, Potassium Salts, Research Essentials, Salts
Quality Level   200
grade   ACS reagent
assay   ≥96.0%
form   granular
pH   11.5 (20 °C, 20 g/L)
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
SMILES string   [K]C#N
InChI   1S/CN.K/c1-2;
InChI key   YUZRZFQHUCKACF-UHFFFAOYSA-N

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 
Thyroid
Supplemental Hazard Statements 
EUH032
RIDADR 
UN 1680 6.1 / PGI
WGK Germany 
WGK 3
RTECS 
TS8750000
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
Peer-Reviewed Papers
15

References

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