A colorless, odorless flammable gas that is the main constituent of natural gas. It is the simplest member of the alkane series of hydrocarbons
A crystalline solid consisting of methane molecules trapped under pressure in ice in a clathrate structure.
A corrosive substance, CH3SO2OH, which melts at around room temperature (&c.20°C) and is used as a catalyst in esterification, alkylation, and polymerization reactions.
Methane produced by the fermentation of organic matter