Hydrogen Sulfide Gas (H2S) What is H2S? PurityPlus® carries compressed hydrogen sulfide gas at a variety of concentrations and purities. Hydrogen sulfide (H₂S), is a flammable, colorless, foul-smelling gas that is commonly viewed as a natural gas contaminant. Large amounts of hydrogen sulfide are typically extracted from “sour” natural gas fields in attempt to minimize corrosion to enhance the natural gas’s heat content and make it more commercially feasible. Generally, the hydrogen sulfide that is corrected is then converted to elemental sulfur through the process of regulated oxidation. Smaller quantities of hydrogen sulfide are then dried and purified to be sold commercially. Hydrogen sulfide uses In the specialty gas marketplace, there are many hydrogen sulfide uses. Hydrogen sulfide is frequently an element in calibration gases for environmental emission and industrial hygiene monitoring in the ppm range. Where to buy hydrogen sulfide PurityPlus® offers hydrogen sulfide with impurity levels totaling less than 0.5% and our skilled employees can help you match the right technology to your specific specialty gas needs. If you'd like to know where to buy hydrogen sulfide or how to purchase PurityPlus® Hydrogen Sulfide or other specialty gases in your area, contact your local PurityPlus® provider using our distributor locator. You can also reach out to us for more information via our website or at 877-81P-PLUS (877-817-7587). PurityPlus also provides a Hydrogen Sulfide SDS available via this link or in the sidebar.