Ethane exists in nature as a flammable, colorless and odorless gas. It has a chemical formula of C2H6 and is a hydrocarbon. Because the chemical structure only consists of single bonds between hydrogen and carbon atoms, ethane is classified as an alkane.here are actually several gases present in natural gas, and ethane has the second largest percentage in natural gas. Ethane is a colorless, odorless and flammable gas with a chemical formula of C2H6 - it has two carbon (C) atoms and six hydrogen (H) atoms.
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