Potassium Thiocyanate

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art: N/A
Formula KSCN
Molar mass 97.176 g/mol
CAS number 333-20-0
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Description

Potassium thiocyanate is an important salt of the thiocyanate anion, one of the pseudohalides. The compound has a low melting point relative to most other inorganic salts. Aqueous KSCN reacts almost quantitatively with Pb(NO3)2 to give Pb(SCN)2, which has been used to convert acyl chlorides to thiocyanates.KSCN converts ethylene carbonate to ethylenesulfide. For this purpose, the KSCN is first melted under vacuum to remove water. In a related reaction, KSCN converts cyclohexene oxide to the corresponding episulfide. C6H10O + KSCN → C6H10S + KOCN, KSCN is also the starting product for the synthesis of carbonyl sulfide.

Formula
KSCN
Molar mass
97.176 g/mol
CAS Number
333-20-0
Density
1.890 g/cm3
Purity/Grade
≥99.0% (ACS Reagent)
Apearance
Solid
Melting point/freezing point
173°C (343°F) – lit.
pH
 5.3 – 8.7 at 97.2 g/l at 25°C (77°F)
Flash point
Not applicable
Water solubility
ca.97.2 g/l at 20°C (68°F)
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