Potassium thiocyanate

Potassium thiocyanate

Chembox new
ImageFile = Potassium-thiocyanate-xtal-3D-vdW-B.png Name = Potassium thiocyanate
OtherNames = potassium sulfocyanate
potassium isothiocyanate
potassium thiocyanide
Section1 = Chembox Identifiers
CASNo = 333-20-0
RTECS = XL1925000
Section2 = Chembox Properties
Formula = KSCN
MolarMass = 97.18 g/mol
Appearance = colorless crystals
deliquescent
Density = 1.89 g/cm3, solid
Solubility = 2170 g/L
Solvent = other solvents
SolubleOther = e.g. ethanol
acetone:210 g/L
MeltingPt = 173 °C
BoilingPt = 500 °C
Section7 = Chembox Hazards
ExternalMSDS =
MainHazards = toxic
RPhrases = 20/21/22-32-52/53
SPhrases = 13-61
Section8 = Chembox Related
OtherCations = NaSCN
OtherCpds = Potassium cyanide
Potassium cyanate

Potassium thiocyanate is the chemical compound with the molecular formula KSCN. It 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.

Use in chemical synthesis

Aqueous KSCN reacts almost quantitatively with Pb(NO3)2 to give Pb(SCN)2. The lead compound has been used to convert acyl chlorides to the thiocyanates. [OrgSynth | author = Smith, P. A. S.; Kan, R. O. | title = 2a-Thiohomophthalimide | year = 1973 | collvol = 5 | collvolpages = 1051 | prep = cv5p1051]

KSCN converts ethylene carbonate to ethylenesulfide. [OrgSynth | author = Searles, S.; Lutz, E. F.; Hays, H. R.; Mortensen, H. E. | title = Ethylenesulfide | year = 1973 | collvol = 5 | collvolpages = 562 | prep = cv5p0562] 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. [OrgSynth | author = van Tamelen, E. E. | title = Cyclohexenesulfide | year = 1963 | collvol = 4 | collvolpages = 232 | prep = cv4p0232] :C6H10O + KSCN → C6H10S + KOCN

Its the starting product for the synthesis of carbonyl sulfide.

Other uses

Dilute aqueous KSCN is occasionally used for moderately realistic blood effects in film and theater. It can be painted onto a surface or kept as a colourless solution. When in contact with ferric chloride solution, the product of the reaction is a blood red solution.

References


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Look at other dictionaries:

  • potassium thiocyanate — n a hygroscopic crystalline salt KSCN that has been used as an antihypertensive agent …   Medical dictionary

  • potassium thiocyanate — kalio tiocianatas statusas T sritis chemija formulė KSCN atitikmenys: angl. potassium rhodonate; potassium sulfocyanide; potassium thiocyanate rus. калий роданистый; калия тиоцианат ryšiai: sinonimas – kalio rodanidas sinonimas – kalio… …   Chemijos terminų aiškinamasis žodynas

  • potassium thiocyanate — noun : a hygroscopic crystalline salt KSCN having uses similar to those of sodium thiocyanate * * * Chem. a colorless, crystalline, hygroscopic, water soluble solid, KSCN, used chiefly in the manufacture of chemicals, dyes, and drugs. Also called …   Useful english dictionary

  • potassium thiocyanate — Chem. a colorless, crystalline, hygroscopic, water soluble solid, KSCN, used chiefly in the manufacture of chemicals, dyes, and drugs. Also called potassium rhodanide /rohd n uyd , roh dan uyd/. * * * …   Universalium

  • Thiocyanate de potassium — Général Synonymes sulfocyanate de potassium thiocyanure de potassium …   Wikipédia en Français

  • Thiocyanate — (also known as sulphocyanate or thiocyanide or rhodanide) is the anion, [SCN] −. Common compounds include the colourless salts potassium thiocyanate and sodium thiocyanate. Organic compounds containing the functional group SCN are also called… …   Wikipedia

  • potassium rhodonate — kalio tiocianatas statusas T sritis chemija formulė KSCN atitikmenys: angl. potassium rhodonate; potassium sulfocyanide; potassium thiocyanate rus. калий роданистый; калия тиоцианат ryšiai: sinonimas – kalio rodanidas sinonimas – kalio… …   Chemijos terminų aiškinamasis žodynas

  • potassium sulfocyanide — kalio tiocianatas statusas T sritis chemija formulė KSCN atitikmenys: angl. potassium rhodonate; potassium sulfocyanide; potassium thiocyanate rus. калий роданистый; калия тиоцианат ryšiai: sinonimas – kalio rodanidas sinonimas – kalio… …   Chemijos terminų aiškinamasis žodynas

  • Thiocyanate de mercure(II) — Général Nom IUPAC thiocyanate de mercure(II) Synonymes thiocyanate mercurique sulfocyanate mercurique No CAS …   Wikipédia en Français

  • POTASSIUM — Le potassium, troisième élément de ce groupe, possède les propriétés caractéristiques des métaux alcalins. Il a été découvert en 1807 par Humphry Davy lors de la réduction électrolytique de la potasse caustique fondue (KOH). Son symbole chimique… …   Encyclopédie Universelle

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