Acetylene
Ammonia
Butane
Carbon dioxide
Carbon monoxide
Chlorine
Ethanol
Ethylene
Ethylene Oxide
Halocarbons
Hexane
Hydrogen
Hydrogen Sulfide
Methane
Nitric oxide
Nitrogen dioxide
Nitrous oxide
Octane
Oxygen
Ozone
Propane
Sulfur dioxide
Sulfur hexafluoride
Volatile organic compounds