Potassium hydrosulfide

Potassium hydrosulfide
Names
	IUPAC name Potassium hydrosulfide
	Other names Potassium bisulfide, Potassium sulfhydrate, potassium hydrogen sulfide
Identifiers
CAS Number	1310-61-8 ;
3D model (JSmol)	Interactive image;
ChemSpider	92246 ;
ECHA InfoCard	100.013.803
EC Number	215-182-9;
PubChem CID	102109;
UNII	SX1L03AL9I ;
CompTox Dashboard (EPA)	DTXSID6061654 ;
	InChI InChI=1S/K.H2S/h;1H2/q+1;/p-1 Key: ZOCLAPYLSUCOGI-UHFFFAOYSA-M ; InChI=1/K.H2S/h;1H2/q+1;/p-1 Key: ZOCLAPYLSUCOGI-REWHXWOFAJ;
	SMILES [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)	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). verify (what is ?) Infobox references

Potassium hydrosulfide is an 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 of potassium chloride. Their structure is however complicated by the non-spherical symmetry of the SH⁻ anions, but these tumble rapidly in the solid.^[2]

The addition of sulfur gives dipotassium pentasulfide.

Synthesis

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

References

^ 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.
^ 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.
^ Kurzer, F.; Lawson, A. (1962). "Thiobenzoylthioglycolic Acid". Organic Syntheses. 42: 100. doi:10.15227/orgsyn.042.0100.
^ Robert L. Frank and James R. Blegen (1948). "Benzoyl Disulfide". Organic Syntheses. 28: 16. doi:10.15227/orgsyn.028.0016.

[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.

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Potassium hydrosulfide

Synthesis

References

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