Hydrogen sulfide is the chemical compound with the formula H 2S. It is a colorless gas with the characteristic foul odor of rotten eggs. It is very poisonous, corrosive, and flammable.
Formula: H2S
Molar mass: 34.0809 g/mol
Boiling point: -60 °C
Density: 1.36 kg/m³
Melting point: -82 °C