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Potassium hydrosulfide

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Potassium hydrosulfide
Names
IUPAC name Potassium hydrosulfide
Other names Potassium bisulfide, Potassium sulfhydrate, potassium hydrogen sulfide
Identifiers
CAS Number
3D model (JSmol)
ECHA InfoCard 100.013.803 Edit this at Wikidata
EC Number
  • 215-182-9
PubChem CID
CompTox Dashboard (EPA)
InChI
  • InChI=1S/K.H2S/h;1H2/q+1;/p-1
SMILES
  • .
Properties
Chemical formula HKS
Molar mass 72.171 g/mol
Appearance white solid
Density 1.68–1.70 g/cm
Melting point 455 ºC
Solubility in water good
Hazards
Occupational safety and health (OHS/OSH):
Main hazards Flammable solid, stench, releases hydrogen sulfide
NFPA 704 (fire diamond)
NFPA 704 four-colored diamondHealth 3: Short exposure could cause serious temporary or residual injury. E.g. chlorine gasFlammability 2: Must be moderately heated or exposed to relatively high ambient temperature before ignition can occur. Flash point between 38 and 93 °C (100 and 200 °F). E.g. diesel fuelInstability 0: Normally stable, even under fire exposure conditions, and is not reactive with water. E.g. liquid nitrogenSpecial hazards (white): no code
3 2 0
Related compounds
Other anions Potassium hydroxide
Other cations Sodium hydrosulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C , 100 kPa). checkY verify (what is  ?) Infobox references
Chemical compound

Potassium hydrosulfide is the inorganic compound with the formula KHS. This colourless salt consists of the cation K and the bisulfide anion . It is the product of the half-neutralization of hydrogen sulfide with potassium hydroxide. The compound is used in the synthesis of some organosulfur compounds. It is prepared by neutralizing aqueous KOH with H2S. Aqueous solutions of potassium sulfide consist of a mixture of potassium hydrosulfide and potassium hydroxide.

The structure of the potassium hydrosulfide resembles that for potassium chloride. Their structure is however complicated by the non-spherical symmetry of the SH anions, but these tumble rapidly in the solid high temperatures.

References

  1. Dittmer, D. C. “Potassium Hydrogen Sulfide” in Encyclopedia of Reagents for Organic Synthesis (Ed: L. Paquette) 2004, J. Wiley & Sons, New York. doi:10.1002/047084289.
  2. Kurzer, F. Lawson, A. “Thiobenzoylthioglycolic Acid” Organic Syntheses, Collected Volume 5, p.1046 (1973).
  3. Haarmann, F; Jacobs, H.; Roessler, E.; Senker, J. (2002). "Dynamics of Anions and Cations in Hydrogensulfides of Alkali Metals (NaHS, KHS, RbHS): A Proton Nuclear Magnetic Resonance Study". Journal of Chemical Physics. 117 (3): 1269–1276. doi:10.1063/1.1483860.{{cite journal}}: CS1 maint: multiple names: authors list (link)
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