Definition of hydrogen sulfide Hydrogen sulfide
We found 3 definitions of hydrogen sulfide from 3 different sources.
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What does hydrogen sulfide mean?
WordNet
Noun |
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| hydrogen sulfide - a sulfide having the unpleasant smell of rotten eggs |
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Wiktionary 
- hydrogen sulfide (Noun)
A toxic gas, H2S, smelling like rotten eggs and used in analytical chemistry and industry.
Wikipedia 
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Hydrogen sulfide (hydrogen sulphide in British English), H2S, is a colorless, toxic, flammable gas that is responsible for the foul smell of rotten eggs and flatulence. It often results when bacteria break down organic matter in the absence of oxygen. This happens in swamps, and sewers (alongside the process of anaerobic digestion). It also occurs in volcanic gases, natural gas and some well waters. This is the smell that people often think to be that of sulfur. But sulfur itself does not smell.
Hydrogen sulfide is also known as sulfane, sulfur hydride, sour gas, sulfurated hydrogen, hydrosulfuric acid, sewer gas and stink damp. IUPAC accepts the names "hydrogen sulfide" and "sulfane". When people speak of more complicated compounds they always use the term "sulfane".
Occurrence.
Small amounts of hydrogen sulfide can be found in crude petroleum but natural gas can contain up to 28%. Volcanoes and hot springs emit some H2S, where it probably arises via the hydrolysis of sulfide minerals, i.e. MS + H2O to give MO + H2S.
Normal average concentration in clean air is about 0.0001-0.0002 ppm.
Safety.
Hydrogen sulfide is a highly toxic and flammable gas. Because it is heavier than air it tends to accumulate at the bottom of poorly ventilated spaces.
Toxicity.
Hydrogen sulfide is considered a broad-spectrum poison, meaning that it can poison several different systems in the body, although the nervous system is most affected. The toxicity of H2S is comparable with that of hydrogen cya
