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207799 Sigma-Aldrich

Potassium thiocyanate

ACS reagent, 99%

Synonym: Potassium rhodanide

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Properties

Related Categories Building Blocks, Chemical Synthesis, Essential Chemicals, Organic Building Blocks, Potassium Salts,
Quality Level   200
grade   ACS reagent
assay   99%
form   crystalline powder
impurities   Iodine consuming substances, passes test
  ≤0.005% insol. water
color   colorless to white
pH   5.3-8.7 (25 °C, 5%)
mp   173 °C (lit.)
anion traces   chloride (Cl-): ≤0.005%
  sulfate (SO42-): ≤0.005%
cation traces   Fe: ≤2 ppm
  NH4+: ≤0.003%
  Na: ≤0.005%
  heavy metals (as Pb): ≤5 ppm
SMILES string   [K]SC#N
InChI   1S/CHNS.K/c2-1-3;/h3H;/q;+1/p-1
InChI key   ZNNZYHKDIALBAK-UHFFFAOYSA-M

Description

General description

Potassium thiocyanate is an inorganic potassium salt. Phase transitions in potassium thiocyanate (KSCN) have been investigated by X-ray diffraction studies. The order-disorder type transition with respect to the orientation of the thiocyanate ions was identified. Its polarized infrared spectrum has been reported. It participates in the ring-opening of aziridines. The reaction was carried out in the presence of sulfated zirconia to afford the corresponding β-aminothiocyanates.

Application

Potassium thiocyanate (KSCN) may be used for the colorimetric quantification of intracellular iron content of the superparamagnetic iron oxide (SPIO) nanoparticles.

Potassium thiocyanate may be used in the synthesis of the following:
• α-Amino nitriles from tertiary amines.
• Polysubstituted 2-aminothiazoles from vinyl azides.
• Benzisothiazol-3(2H)-one derivatives from o-bromobenzamides.
• Diaryl thioethers from aryl halides.

Packaging

100, 500 g in poly bottle

2.5 kg in poly bottle

Safety & Documentation

Safety Information

Symbol 
Signal word 
Danger
Hazard statements 
Supplemental Hazard Statements 
EUH032
RIDADR 
NONH for all modes of transport
WGK Germany 
WGK 1
RTECS 
XL1925000
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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