Features of Hydrogen sulfide
Hydrogen sulfide, H2S, is a toxic and flammable gas.
Physical and chemical properties
Physical state: Liquefied gas
Molecular weight: 34 g/mol
Smell: Of rotten eggs, persistent, hardly noticeable in high concentrations
Hydrogen sulfide is used:
- for the production of sodium and thiophene sulfide that are used in the chemical industry for the protection of iron or carbon steel against the corrosion in salt-using processes (e.g. sodium chloride);
- in calibration mixtures for environmental monitoring (petrochemical industry);
Stability and reactivity
It can form explosive mixtures with the air.
It reacts with water to form corrosive acids.
It can reacts violently with alkali.