Potassium hydrosulfide

Potassium hydrosulfide
Names
IUPAC name
Potassium hydrosulfide
Other names
Potassium bisulfide, Potassium sulfhydrate, potassium hydrogen sulfide
Identifiers
CAS Number
  • 1310-61-8 checkY
3D model (JSmol)
  • Interactive image
ChemSpider
  • 92246 ☒N
ECHA InfoCard 100.013.803 Edit this at Wikidata
EC Number
  • 215-182-9
PubChem CID
  • 102109
UNII
  • SX1L03AL9I checkY
CompTox Dashboard (EPA)
  • DTXSID6061654 Edit this at Wikidata
InChI
  • InChI=1S/K.H2S/h;1H2/q+1;/p-1 ☒N
    Key: ZOCLAPYLSUCOGI-UHFFFAOYSA-M ☒N
  • InChI=1/K.H2S/h;1H2/q+1;/p-1
    Key: ZOCLAPYLSUCOGI-REWHXWOFAJ
  • [SH-].[K+]
Properties
Chemical formula
 KSH
Molar mass 72.171 g/mol
Appearance white solid
Density 1.68–1.70 g/cm3
Melting point 455 °C (851 °F; 728 K)
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
Related compounds
 potassium sulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
☒N verify (what is checkY☒N ?)
Infobox references
Chemical compound

Potassium hydrosulfide is the inorganic compound with the formula KSH. This colourless salt consists of the cation K+ and the bisulfide anion [SH]−. 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.[1] 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.[2]

Addition of sulfur gives dipotassium pentasulfide.

Synthesis

It is prepared by neutralizing aqueous KOH with H2S.[3][4]

References

  1. ^ Dittmer, Donald C. (2001). "Potassium Hydrogen Sulfide". In Paquette, L. (ed.). Encyclopedia of Reagents for Organic Synthesis. J. Wiley & Sons, New York. doi:10.1002/047084289X.rp227. ISBN 0471936235.
  2. ^ 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. Bibcode:2002JChPh.117.1269H. doi:10.1063/1.1483860.
  3. ^ Kurzer, F.; Lawson, A. (1962). "Thiobenzoylthioglycolic Acid". Organic Syntheses. 42: 100. doi:10.15227/orgsyn.042.0100.
  4. ^ Robert L. Frank and James R. Blegen (1948). "Benzoyl Disulfide". Organic Syntheses. 28: 16. doi:10.15227/orgsyn.028.0016.
  • v
  • t
  • e
H, (pseudo)halogens
chalcogens
  • K2O
  • KOH
  • K2O2
  • KO2
  • KO3
  • K2S
  • KHS
  • K2SO3
  • KHSO3
  • K2SO4
  • KHSO4
  • KHSO5
  • K2S2O3
  • K2S2O5
  • K2S2O7
  • K2S2O8
  • K2Se
  • K2SeO3
  • K2SeO4
  • K2Te
  • K2TeO3
  • K2TeO4
  • K2Po
pnictogens
  • K3N
  • KNH2
  • KN3
  • KNO2
  • KNO3
  • K3P
  • KH2PO3
  • K3PO4
  • K2HPO4
  • KH2PO4
  • KPF6
  • KAsO2
  • K3AsO4
  • K2HAsO4
  • KH2AsO4
B, C group
  • B4K2O7
  • K2CO3
  • KHCO3
  • K2SiO3
  • K2SiF6
  • K2Al2O4
  • K2Al2B2O7
trans metals
  • K2PtCl4
  • K2Pt(CN)4
  • K2TiF6
  • K2PtCl6
  • K2ReCl6
  • K2ZrF6
  • K4Fe(CN)6
  • K3Fe(CN)6
  • K3Fe(C2O4)3
  • K2FeO4
  • K2MnO4
  • KMnO4
  • K3CrO4
  • K2CrO4
  • K3CrO8
  • KCrO3Cl
  • K2Cr2O7
  • K2Cr3O10
  • K2Cr4O13
  • K4Mo2Cl8
organic
  • KHCO2
  • KCH3CO2
  • KCF3CO2
  • K2C2O4
  • KHC2O4
  • KC12H23O2
  • KC18H35O2
  • C3H2K2O4
  • C4H6KO4
  • C5H7KO4