Sub-Product

Sour Gas is Natural Gas or any other Gas containing significant amounts of Hydrogen Sulfide (H₂S). Natural Gas is usually considered sour if there are more than 5.7 milligrams of H₂S per cubic meter of Natural Gas, which is equivalent to approximately 4 ppm by volume under standard temperature and pressure. Natural Gas typically contains several ppm of volatile Sulfur Compounds, but Gas from one well in Canada is known to contain 90% Hydrogen Sulfide and others may have H₂S contents in the tens of percent range.