Ammonium hydrosulfide

Ammonium hydrosulfide
Hydrogen sulfide ion.svg
IUPAC name
ammonium hydrosulfide
Other names
ammonium bisulfide
ammonium hydrogen sulfide
3D model (JSmol)
ECHA InfoCard100.031.974
EC Number235-184-3
RTECS numberBS4900000
UN number2683
Molar mass51.111 g/mol
AppearanceYellow-orange fuming liquid.
Density1.17 g/cm3[1]
Boiling point 56.6 °C (133.9 °F; 329.8 K)
Solubilitysoluble in alcohol, liquid ammonia, liquid hydrogen sulfide; insoluble in benzene, hexane and ether
Main hazardsToxic
GHS pictogramsThe corrosion pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)The environment pictogram in the Globally Harmonized System of Classification and Labelling of Chemicals (GHS)
GHS signal wordDanger
H314, H400.
P260, P264, P273, P280, P301+330+331, P303+361+353, P304+340, P305+351+338, P310, P321, P363, P391, P405, P501
NFPA 704
Lethal dose or concentration (LD, LC):
168 mg/kg (rat, oral)[2]
Related compounds
Other anions
Ammonia solution
Other cations
Sodium hydrosulfide
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
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Infobox references

Ammonium hydrosulfide is the chemical compound with the formula (NH4)HS.


It is the salt derived from the ammonium cation and the hydrosulfide anion. The salt exists as colourless, water-soluble, micaceous crystals. On Earth the compound is encountered mainly as a solution, not as the solid, but NH4SH ice is believed to be a substantial component of the cloud decks of the gas-giant planets Jupiter and Saturn, with sulfur produced by its photolysis responsible for the color of some of those planets' clouds. It can be generated by mixing hydrogen sulfide and ammonia.

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