hydrogen sulfide
Toxic volcanic emission
Hydrogen sulfide is a colorless gas with the characteristic smell of rotten eggs, produced by decaying organic matter and volcanic activity.
The compound is highly toxic in concentrated amounts, though detectable by smell at very low levels.
It occurs naturally in crude oil, natural gas, and hot springs: The sulfur springs reeked of hydrogen sulfide.
Capable of causing death
- asphyxiantGas blocking oxygen access
- lethalCausing or capable of death
- hazardousLikely to cause injury
- deadlyAble to cause expiration
noxious · neurotoxic · exposure · inhalation · concentration · ppm · OSHA · safety
Bonded atomic group
- gasFormless, expanding substance
- sulfurYellow combustible element
- covalentSharing electrons between atoms
- inorganicNot from living matter
polar · dipole · acidic · reactivity · solubility · synthesis · valence · electronegativity
Not requiring oxygen
- bacteriaNucleus-free single-celled organisms
- decompositionBreakdown into simpler parts
- putrefactionBacterial breakdown of tissue
- digestionBodily food breakdown
flatulence · gut · marshland · sediment · organic matter · fermentation · microbial · metabolism
Decomposed poultry products
- stenchPowerfully offensive odor
- putridDecomposed and foul-smelling
- foulOffensive or illegal
- sulfurousContaining yellow element
malodorous · pungent · sewer · swamp · offensive · nauseating · repulsive · smell
Of fiery mountain origin
- fumaroleVolcanic gas vent
- hot springsHeated groundwater emerging naturally
- geyserErupting thermal vent
- sulfur depositsAccumulated yellow nonmetal element
geothermal · hydrothermal · vent · crater · magma · Yellowstone · Rotorua · mantle
Subterranean hydrocarbon fuel
- petroleumNatural underground hydrocarbon liquid
- refineryIndustrial purification facility
- sour gasSulfur-contaminated natural gas
- sweeteningAdding substance for taste
Claus process · desulfurization · oil field · wellhead · pipeline · paper mill · tannery · wastewater
Capable of burning
- ignitionStarting combustion process
- flammableProne to ignition
- explosiveProne to sudden detonation
- fire hazardCombustion danger source
flashpoint · spark · oxygen · burn · flame · blue flame · autoignition · confined space
poisonous
Capable of causing death
- asphyxiantGas blocking oxygen access
- lethalCausing or capable of death
- hazardousLikely to cause injury
deadly · noxious · neurotoxic · exposure · inhalation · concentration · ppm · OSHA · safety · detector
molecule
Bonded atomic group
- gasFormless, expanding substance
- sulfurYellow combustible element
- covalentSharing electrons between atoms
inorganic · polar · dipole · acidic · reactivity · solubility · synthesis · valence · electronegativity · dissociation
anaerobic
Not requiring oxygen
- bacteriaNucleus-free single-celled organisms
- decompositionBreakdown into simpler parts
- putrefactionBacterial breakdown of tissue
digestion · flatulence · gut · marshland · sediment · organic matter · fermentation · microbial · metabolism
rotten eggs
Decomposed poultry products
sulfurous · malodorous · pungent · sewer · swamp · offensive · nauseating · repulsive · smell · detection
volcanic
Of fiery mountain origin
- fumaroleVolcanic gas vent
- hot springsHeated groundwater emerging naturally
- geyserErupting thermal vent
sulfur deposits · geothermal · hydrothermal · vent · crater · magma · Yellowstone · Rotorua · mantle · degassing
natural gas
Subterranean hydrocarbon fuel
- petroleumNatural underground hydrocarbon liquid
- refineryIndustrial purification facility
- sour gasSulfur-contaminated natural gas
sweetening · Claus process · desulfurization · oil field · wellhead · pipeline · paper mill · tannery · wastewater · biogas
combustible
Capable of burning
fire hazard · flashpoint · spark · oxygen · burn · flame · blue flame · autoignition · confined space · ventilation
hydrogen sulfideperfume
Fragrant liquid for wearing
fresh air · fragrance · rose scent · sweet smell · clean air
hydrogen sulfideoxygen
Element eight, colorless gas
fresh air · breathable air · inert gas · nitrogen · pure air
hydrogen sulfideoxygen
Element eight, colorless gas
carbon dioxide · ammonia · water · water vapor · sulfur dioxide
dehydrate, dehydration, hydrate, hydration, hydrogen, anhydrous, hydrous, sulfide, hydrometer