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31272

Sigma-Aldrich

Potassium thiocyanate

puriss. p.a., ACS reagent, reag. ISO, reag. Ph. Eur., ≥99%

Synonym(s):

Potassium rhodanide

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About This Item

Linear Formula:
KSCN
CAS Number:
333-20-0
Molecular Weight:
97.18
Beilstein/REAXYS Number:
3594799
EC Number:
206-370-1
MDL number:
MFCD00011413
UNSPSC Code:
12352302
PubChem Substance ID:
329753715
assay:
≥99%
form:
crystals

grade

ACS reagent
puriss. p.a.

agency

USP/NF
reag. ISO
reag. Ph. Eur.

assay

≥99%

form

crystals

technique(s)

titration: suitable

impurities

≤0.001% ammonium (NH4)
≤0.005% water insoluble matter
≤0.01% insoluble in ethanol
≤0.025% matter consuming I (as I)

pH

5.3-8.5 (25 °C, 5%)

mp

173 °C (lit.)

anion traces

chloride (Cl-): ≤50 mg/kg
sulfate (SO42-): ≤10 mg/kg
sulfide (S2-): ≤10 mg/kg

cation traces

Cu: ≤2 mg/kg
Fe: ≤1 mg/kg
Na: ≤50 mg/kg
Pb: ≤2 mg/kg
heavy metals (as Pb): ≤5 mg/kg

SMILES string

[K]SC#N

InChI

1S/CHNS.K/c2-1-3;/h3H;/q;+1/p-1

InChI key

ZNNZYHKDIALBAK-UHFFFAOYSA-M

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General description

Phase transition studies of potassium thiocyanate (KSCN) suggest that thiocyanate ions exhibit order-disorder type transitions.[1] Its polarized infrared spectrum has been reported.[2] It participates in the ring-opening of aziridines. This reaction was carried out in the presence of sulfated zirconia to afford the corresponding β-aminothiocyanates.[3]

Application

Potassium thiocyanate (KSCN) may be used to study the effect of emulsifier type on the micro-structural changes occurring in emulsified lipids during in vitro digestion.[4] It may be used for colorimetric quantification of intracellular iron content of superparamagnetic iron oxide (SPIO) nanoparticles.[5]

pictograms

CorrosionExclamation mark
GHS05,GHS07

signalword

Danger

Hazard Classifications

Acute Tox. 4 Dermal - Acute Tox. 4 Inhalation - Acute Tox. 4 Oral - Aquatic Chronic 3 - Eye Dam. 1

supp_hazards

EUH032

Storage Class

13 - Non Combustible Solids

wgk_germany

WGK 1

flash_point_f

Not applicable

flash_point_c

Not applicable

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Nikolay A Semenov et al.
Chemistry (Weinheim an der Bergstrasse, Germany), 24(49), 12983-12991 (2018-06-09)
Donor-acceptor (D-A) complexes between 3,4-dicyano-1,2,5-chalcogenadiazoles [chalcogen=Te (1 a), Se (1 b), S (1 c)] and the pseudohalides CN- and XCN- (X=O, S, Se, Te) were studied experimentally and theoretically. For 1 a, they were isolated as [K(18-crown-6)][1 a-CN] (2), [K(18-crown-6)][1 a-NCO] (3), [K(18-crown-6)][1 a-SCN] (4), [K(18-crown-6)][1 a-SeCN] (5)
Influence of initial emulsifier type on microstructural changes occurring in emulsified lipids during in vitro digestion.
Hur SJ, et al.
Food Chemistry, 114(1), 253-262 (2009)
Regioselective ring-opening of aziridines with potassium thiocyanate and thiols using sulfated zirconia as a heterogeneous recyclable catalyst.
Das B, et al.
Tetrahedron Letters, 47(5), 779-782 (2006)
The Phase Transition of Crystalline Potassium Thiocyanate, KSCN. II. X-Ray Study.
Yamada Y and Watanabe T.
Bulletin of the Chemical Society of Japan, 36(8), 1032-1037 (1963)
Polarized infrared spectrum of potassium thiocyanate.
Jones LH.
J. Chem. Phys. , 28(6), 1234-1236 (1958)
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