Potassium hydrosulfide is the inorganic compound with the formula KHS. 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. 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.
Addition of sulfur gives dipotassium pentasulfide.

Chemical Name	POTASSIUM HYDROSULFIDE
Synonyms	KSH,medium temperature;Kaliumhydrogensulfid;potassiumsulfide(k(sh));Potassiumhydrogensulfide,anhydrous,min.;potassium bisulfide;potassium hydrogensulphide;Collapse
CAS No.	1310-61-8
Molecular Formula	HKS
Molecular Weight	72.17120
PSA	38.80000
LogP	0.38050

Hazard Class	4.2
Packing Group	II
RIDADR	UN 1382