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| Names | |
|---|---|
| IUPAC name
Potassium hydrosulfide | |
| Other names
Potassium bisulfide, Potassium sulfhydrate, potassium hydrogen sulfide | |
| Identifiers | |
3D model (JSmol) |
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| ChemSpider |
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| ECHA InfoCard | 100.013.803 
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| EC Number |
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PubChem CID |
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| UNII | |
CompTox Dashboard (EPA) |
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| Properties | |
| 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) |
| good | |
| Hazards | |
| Occupational safety and health (OHS/OSH): | |
Main hazards |
Flammable solid, stench, releases hydrogen sulfide |
| NFPA 704 (fire diamond) | |
| 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). | |
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.
It is prepared by neutralizing aqueous KOH with H2S.[3][4]
