K+SH− | |
| Names | |
|---|---|
| IUPAC name Potassium hydrosulfide | |
| Other names Potassium bisulfide, Potassium sulfhydrate, potassium hydrogen sulfide | |
| Identifiers | |
3D model (JSmol) | |
| ChemSpider |
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| ECHA InfoCard | 100.013.803 |
| EC Number |
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| UNII | |
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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, releaseshydrogen sulfide |
| NFPA 704 (fire diamond) | |
| Related compounds | |
Otheranions | Potassium hydroxide |
Othercations | Sodium hydrosulfide |
Related compounds | potassium sulfide |
Except where otherwise noted, data are given for materials in theirstandard state (at 25 °C [77 °F], 100 kPa). | |
Potassium hydrosulfide is aninorganic compound with the formula KSH. This colourlesssalt consists of the cationK+ and thebisulfide anion[SH]−. It is the product of the half-neutralization ofhydrogen sulfide withpotassium hydroxide. The compound has been used in the synthesis oforganosulfur compounds.[1] Aqueous solutions ofpotassium sulfide consist of a mixture of potassium hydrosulfide andpotassium hydroxide.
The structure of the potassium hydrosulfide resembles that ofpotassium chloride. Their structure is however complicated by the non-spherical symmetry of theSH−anions, but these tumble rapidly in the solid.[2]
Potassium hydrosulfide reacts with elemental sulfur to gives polysulfide salts, such asdipotassium pentasulfide.
Potassium hydrosulfide is prepared by neutralizing aqueousKOH withH2S.[3][4]
