AMMONIUM HYDROSULFIDE
Tuesday, September 16th, 2008Formula : NH4HS; MW51.113 
Synonyms : ammonium sulfhydrate, ammonium bisulfide, ammonium hydrogen sulfide
Uses
Aqueous solutions of 
are used in various commercial applications including textile manufacture.
Physical Properties
White tetragonal or orthorhombic crystal; density 1.17g/cm³; refractive index 1.74; unstable, sublimes readily at ordinary temperatures; vapor pressure 748 torr at 32°C; highly soluble in water, alcohol, liquid ammonia and liquid hydrogen sulfide; insoluble in benzene, hexane and ether.
Thermochemical Properties
Preparation
is prepared by the reaction of an equimolar amount of ammonia and hydrogen sulfide :
Reactions
When heated, the hydrosulfide dissociates into ammonia and hydrogen sulfide; addition of sulfur produces ammonium sulfide:
