Hydrogen sulphide occurs as a by-product of many chemical processes. It is an off-gas in the production of viscose rayon, synthetic rubber, various petroleum products, and dyes, as well as leather processing. It can also be manufactured of many metallic sulphides with a mineral acid such as hydrochloric or sulphuric acid.
Hydrogen sulphide is used for metal separation, removal of metallic impurities, and for preparation of metallic sulphides.
Hydrogen sulphide is to regenerate certain types of catalyst used in the petrochemical industry.
Hydrogen sulphide is used in the mixture for emission control applications.
Hydrogen sulphide is used as an analytical reagent in chemical analysis.
Hydrogen sulphide is used for the preparation of phosphors oil additives and for production of additives for high-pressure lubricants and cutting oils.
Hydrogen sulphide is used in the chemical industry for the production of sulphurated compounds, as mercaptans, sulphides, etc.
Hydrogen sulphide is also used as a solvent and as an odorant in town gas.
Hydrogen sulphide is used in the separation of heavy water, from normal water with some nuclear power station.
Hydrogen sulphide is used for surface treatment of metals.