It is known that larger hydrocarbon molecules
like ethane and propane can also form hydrates, although longer molecules (butanes, pentanes) can not fit into the water cage structure and tend to destabilise the formation of hydrates.
Titan's atmosphere, for instance, consists of a large quantity of greenhouse gases
like ethane and methane.
But the moon's frigid temperatures mean its liquids are hydrocarbons
like ethane or methane, not water.
Not exact matches
The key ingredient is gas hydrate, a substance that forms when hydrocarbon gases
like methane and
ethane come into contact with water at the right temperature and pressure.
They filled a small tube with liquid
ethane, chilled it to a Titan -
like -179 °C and added benzene.
It could be that the liquid is thick and viscous,
like honey, though the material properties of methane and
ethane at low temperatures are not well known.
Much
like submarines on Earth, the sub would explore the depths of one of Titan's methane /
ethane seas.
Saturn's largest moon, Titan, hosts Earth -
like geographical features, including rivers made of methane and
ethane, as well as clouds and possibly volcanoes.
However, what comes out of a gas well isn't pure methane, but a blend that also includes chemicals
like butane, propane, and
ethane — and
ethane is a key building block for plastics.