Definition - What does H2S mean?

Hydrogen sulphide (H2S) is a highly hazardous gas owing to its physical properties. It is extremely flammable and has explosive properties. It is a colourless gas that is recognisable by its strong odour and both melting and boiling points are lower than that of water.

Safeopedia explains H2S

Workers are generally exposed to hydrogen sulphide through inhalation, but physical contact with liquid H2S can cause frostbite. If a spill occurs and a worker’s clothing is dampened, ignition sources must be avoided at all costs until the clothing can be removed and isolated. In its gaseous form, the first indication is generally a ‘rotten egg’ smell. Rapid unconsciousness may occur and there is a risk of serious injury. H2S is found in natural gas wells and is produced in the oil and gas industry during the extraction of sulphur.

This definition was written in the context of Physical Properties
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